Pub Date : 2025-08-23DOI: 10.1080/10426507.2025.2551070
Karthika Devi (Writing – original draft) , Chellapandian Kannan (Supervision)
Global warming and CO2 decomposition are interconnected, as CO2 is a major contributor to global warming. One potential approach to mitigating global warming is decomposing CO2 to release oxygen into the atmosphere. In order to decompose the CO2, we have synthesized CuO-AlPO4 by using tetrapropylammonium hydroxide as a template. It is characterized by XRD, FT-IR, BET, TGA, TPD and TEM analyses. XRD results proved that the novel structure of CuO-AlPO4 is formed with two crystal systems, creating a hybrid framework. Aluminophosphate is in a tetrahedral framework and in CuO, the Cu2+ ions are coordinated in a linear way with tetrahedral oxygen (O2−). So, there is a charge transfer transition between O2− and Cu2+ ions, which is proved by UV–Vis spectra. The formation of this hybrid framework may be influenced by the orientation of the template molecules. The hybridization of the frameworks facilitates the generation of oxide ions (O2−), which are highly active in decomposing CO2 at a lower temperature compared to previous literature. The maximum CO2 conversion and oxygen selectivity achieved are 98% and 91%, respectively.
{"title":"Hybridization of CuO and AlPO4 framework to produce a novel nanoporous material of CuO-AlPO4","authors":"Karthika Devi (Writing – original draft) , Chellapandian Kannan (Supervision)","doi":"10.1080/10426507.2025.2551070","DOIUrl":"10.1080/10426507.2025.2551070","url":null,"abstract":"<div><div>Global warming and CO<sub>2</sub> decomposition are interconnected, as CO<sub>2</sub> is a major contributor to global warming. One potential approach to mitigating global warming is decomposing CO<sub>2</sub> to release oxygen into the atmosphere. In order to decompose the CO<sub>2</sub>, we have synthesized CuO-AlPO<sub>4</sub> by using tetrapropylammonium hydroxide as a template. It is characterized by XRD, FT-IR, BET, TGA, TPD and TEM analyses. XRD results proved that the novel structure of CuO-AlPO<sub>4</sub> is formed with two crystal systems, creating a hybrid framework. Aluminophosphate is in a tetrahedral framework and in CuO, the Cu<sup>2+</sup> ions are coordinated in a linear way with tetrahedral oxygen (O<sup>2−</sup>). So, there is a charge transfer transition between O<sup>2−</sup> and Cu<sup>2+</sup> ions, which is proved by UV–Vis spectra. The formation of this hybrid framework may be influenced by the orientation of the template molecules. The hybridization of the frameworks facilitates the generation of oxide ions (O<sup>2−</sup>), which are highly active in decomposing CO<sub>2</sub> at a lower temperature compared to previous literature. The maximum CO<sub>2</sub> conversion and oxygen selectivity achieved are 98% and 91%, respectively.</div></div>","PeriodicalId":20056,"journal":{"name":"Phosphorus, Sulfur, and Silicon and the Related Elements","volume":"200 11","pages":"Pages 875-882"},"PeriodicalIF":1.6,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145195817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-22DOI: 10.1080/10426507.2025.2551069
C. Rajaravi (Conceptualization Methodology Supervision Visualization Writing – review & editing) , U. Elaiyarasan (Conceptualization Investigation Methodology Project administration Validation Writing – original draft)
A356 is a lightweight and high-strength aluminum alloy with excellent corrosion resistance, widely used in aerospace, automotive, and marine applications. However, machining of titanium diboride (TiB2)-reinforced A356 aluminum alloy using unconventional machining methods remains challenging due to the high thermal conductivity and low electrical conductivity, affecting machining efficiency and surface integrity. This study investigates electrical discharge machining (EDM) of A356-10TiB2 composite fabricated via stir casting, using neem oil dielectric fluid. The composite exhibited a hardness of 78.33 BHN. The EDM process was optimized using response surface methodology (RSM) to minimize surface roughness (SR) and maximize material removal rate (MRR) by varying supplied current (SC), pulse on time (Ton), and pulse off time (Toff). The correlation coefficients for MRR and SR were 99.07% and 99.91%, respectively. MRR and SR initially increased with SC, Ton, and Toff but decreased at higher levels. Higher SC and Ton increased ionization temperature, enhancing MRR, while lower values caused cracks and globules. Optimal parameters (SC = 10 A, Ton = 62 µs, Toff = 7 µs) yielded a maximum MRR of 0.211 g/min and minimum SR of 4.34 µm. The optimization error was 1.9% (MRR) and 3.97% (SR), with desirability score of 0.9865 confirming the reliability of the models.
A356是一种轻质高强铝合金，具有优异的耐腐蚀性，广泛用于航空航天，汽车和船舶应用。然而，采用非常规的加工方法加工二硼化钛（TiB2）增强A356铝合金，由于其高导热性和低导电性，影响了加工效率和表面完整性，仍然具有挑战性。研究了搅拌铸造A356-10TiB2复合材料在印楝油介质下的电火花加工。复合材料的硬度为78.33 BHN。利用响应面法（RSM）优化电火花加工工艺，通过改变供电电流（SC）、脉冲接通时间（Ton）和脉冲关闭时间（Toff）来最小化表面粗糙度（SR）和最大化材料去除率（MRR）。MRR和SR的相关系数分别为99.07%和99.91%。MRR和SR最初随着SC、Ton和Toff的增加而增加，但随着SC、Ton和Toff的增加而降低。较高的SC和Ton增加了电离温度，提高了MRR，而较低的SC和Ton则导致了裂缝和球团。最佳参数（SC = 10 A, Ton = 62µs, Toff = 7µs）的最大MRR为0.211 g/min，最小SR为4.34µm。优化误差为1.9% （MRR）和3.97% (SR)，理想评分为0.9865，证实了模型的可靠性。
{"title":"Parametric optimization of electro discharge machining for A356/TiB2 composite using neem oil dielectric: Machining performance and surface morphology analysis","authors":"C. Rajaravi (Conceptualization Methodology Supervision Visualization Writing – review & editing) , U. Elaiyarasan (Conceptualization Investigation Methodology Project administration Validation Writing – original draft)","doi":"10.1080/10426507.2025.2551069","DOIUrl":"10.1080/10426507.2025.2551069","url":null,"abstract":"<div><div>A356 is a lightweight and high-strength aluminum alloy with excellent corrosion resistance, widely used in aerospace, automotive, and marine applications. However, machining of titanium diboride (TiB<sub>2</sub>)-reinforced A356 aluminum alloy using unconventional machining methods remains challenging due to the high thermal conductivity and low electrical conductivity, affecting machining efficiency and surface integrity. This study investigates electrical discharge machining (EDM) of A356-10TiB<sub>2</sub> composite fabricated <em>via</em> stir casting, using neem oil dielectric fluid. The composite exhibited a hardness of 78.33 BHN. The EDM process was optimized using response surface methodology (RSM) to minimize surface roughness (SR) and maximize material removal rate (MRR) by varying supplied current (SC), pulse on time (T<sub>on</sub>), and pulse off time (T<sub>off</sub>). The correlation coefficients for MRR and SR were 99.07% and 99.91%, respectively. MRR and SR initially increased with SC, T<sub>on</sub>, and T<sub>off</sub> but decreased at higher levels. Higher SC and T<sub>on</sub> increased ionization temperature, enhancing MRR, while lower values caused cracks and globules. Optimal parameters (SC = 10 A, T<sub>on</sub> = 62 µs, T<sub>off</sub> = 7 µs) yielded a maximum MRR of 0.211 g/min and minimum SR of 4.34 µm. The optimization error was 1.9% (MRR) and 3.97% (SR), with desirability score of 0.9865 confirming the reliability of the models.</div></div>","PeriodicalId":20056,"journal":{"name":"Phosphorus, Sulfur, and Silicon and the Related Elements","volume":"200 12","pages":"Pages 905-914"},"PeriodicalIF":1.6,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145469005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-21DOI: 10.1080/10426507.2025.2551102
Fei Li (Conceptualization Funding acquisition Methodology Project administration Resources Supervision Writing – original draft Writing – review & editing) , ZeDong Han (Data curation Formal analysis Investigation Methodology Project administration Visualization Writing – original draft) , HanZe Wu (Data curation Formal analysis Writing – original draft)
Industrial silicon is a vital raw material in renewable energy sectors, such as solar photovoltaic panels and silicon-based anode materials. However, its production process is highly energy-intensive, consuming as much as 11 to 13 megawatt-hours (MWh) of electricity for every ton produced, which accounts for over 25% of the total production cost. Therefore, improving production techniques and reducing energy consumption are key focal points for future development. Research indicates that silicon sources from different regions exhibit significant differences in reactivity, directly affecting the production efficiency of industrial silicon. The Carbon-Silicon Composite Agglomerate (CSCA) technology contributes to effective resource utilization, improves temperature distribution within submerged arc furnaces, and enhances the formation rates of silicon carbide and silicon oxide. This study evaluates the reaction behavior of different silica sources under varying temperatures, carbon-silicon ratios, and particle sizes, along with calculations of activation energy. Based on the reactivity matching assessment, Q2 and Q3 quartz have been identified as ideal raw materials for industrial silicon production. The activation energies for these three quartz types are 269 kJ·mol−1, 319 kJ·mol−1, and 341 kJ·mol−1, respectively. These findings provide significant insights for the industrial silicon industry in selecting raw materials and optimizing the CSCA production process.
{"title":"Carbothermal reduction behavior of quartz resources at elevated temperatures","authors":"Fei Li (Conceptualization Funding acquisition Methodology Project administration Resources Supervision Writing – original draft Writing – review & editing) , ZeDong Han (Data curation Formal analysis Investigation Methodology Project administration Visualization Writing – original draft) , HanZe Wu (Data curation Formal analysis Writing – original draft)","doi":"10.1080/10426507.2025.2551102","DOIUrl":"10.1080/10426507.2025.2551102","url":null,"abstract":"<div><div>Industrial silicon is a vital raw material in renewable energy sectors, such as solar photovoltaic panels and silicon-based anode materials. However, its production process is highly energy-intensive, consuming as much as 11 to 13 megawatt-hours (MWh) of electricity for every ton produced, which accounts for over 25% of the total production cost. Therefore, improving production techniques and reducing energy consumption are key focal points for future development. Research indicates that silicon sources from different regions exhibit significant differences in reactivity, directly affecting the production efficiency of industrial silicon. The Carbon-Silicon Composite Agglomerate (CSCA) technology contributes to effective resource utilization, improves temperature distribution within submerged arc furnaces, and enhances the formation rates of silicon carbide and silicon oxide. This study evaluates the reaction behavior of different silica sources under varying temperatures, carbon-silicon ratios, and particle sizes, along with calculations of activation energy. Based on the reactivity matching assessment, Q2 and Q3 quartz have been identified as ideal raw materials for industrial silicon production. The activation energies for these three quartz types are 269 kJ·mol<sup>−1</sup>, 319 kJ·mol<sup>−1</sup>, and 341 kJ·mol<sup>−1</sup>, respectively. These findings provide significant insights for the industrial silicon industry in selecting raw materials and optimizing the CSCA production process.</div></div>","PeriodicalId":20056,"journal":{"name":"Phosphorus, Sulfur, and Silicon and the Related Elements","volume":"200 11","pages":"Pages 883-896"},"PeriodicalIF":1.6,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145195819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ten N-(2/3/4-substituted phenyl)-2-(imidazo[1,2-a]pyrazin-2-carbonyl)hydrazin-1-carbothioamide derivatives (2a–2j) were synthesized, analyzed utilizing 1H-NMR,13C-NMR, and HRMS. Their antiproliferative activity against the cancerous A549 cell line, and the healthy L929 cell line as well as their potential enzymatic inhibition effect against matrix metalloproteinase-9 (MMP-9) were evaluated. In terms of cytotoxicity, none of the compounds show similar activity against the A549 cell line compared to the reference cisplatin, however, derivatives 2h and 2i that contain 2-chlorophenyl and 3-chlorophenyl moieties, respectively had the highest potency compared to other derivatives, while none of the compounds were cytotoxic against the normal L929 cell line. In terms of MMP-9 inhibition activity, compounds 2f and 2g were the most potent inhibitors compared to other derivatives with % inhibitions of 46.54 and 26.81, respectively. The binding of compound 2f with the ion Zn301 and its bonding amino acids His 230 and His 226 are noticed to be the characteristic interactions that significantly affect the inhibition of MMP-9 enzyme according to the docking studies.
{"title":"Investigation of novel imidazo[1,2-a]pyrazine derivatives as antiproliferative agents and their enzymatic inhibition effect against MMP-9","authors":"Amal A. AL-Sharabi (Formal analysis Investigation Methodology Validation Visualization Writing – original draft Writing – review & editing) , Sana Saffour (Data curation Investigation Methodology Validation Visualization) , Asaf Evrim Evren (Formal analysis Investigation Methodology Software Validation Visualization Writing – review & editing) , Abd Al Rahman Asfour (Methodology Validation Visualization Writing – review & editing) , Halide Edip Temel (Data curation Methodology Validation Visualization) , Gülşen Akalin Çiftçi (Investigation Methodology Validation Visualization) , Leyla Yurttaş (Conceptualization Data curation Formal analysis Investigation Methodology Project administration Resources Supervision Validation Visualization Writing – review & editing) , Gülhan Turan (Project administration Supervision)","doi":"10.1080/10426507.2025.2548920","DOIUrl":"10.1080/10426507.2025.2548920","url":null,"abstract":"<div><div>Ten <em>N</em>-(2/3/4-substituted phenyl)-2-(imidazo[1,2-a]pyrazin-2-carbonyl)hydrazin-1-carbothioamide derivatives (<strong>2a–2j</strong>) were synthesized, analyzed utilizing <sup>1</sup>H-NMR,<sup>13</sup>C-NMR, and HRMS. Their antiproliferative activity against the cancerous A549 cell line, and the healthy L929 cell line as well as their potential enzymatic inhibition effect against matrix metalloproteinase-9 (MMP-9) were evaluated. In terms of cytotoxicity, none of the compounds show similar activity against the A549 cell line compared to the reference cisplatin, however, derivatives <strong>2h</strong> and <strong>2i</strong> that contain 2-chlorophenyl and 3-chlorophenyl moieties, respectively had the highest potency compared to other derivatives, while none of the compounds were cytotoxic against the normal L929 cell line. In terms of MMP-9 inhibition activity, compounds <strong>2f</strong> and <strong>2g</strong> were the most potent inhibitors compared to other derivatives with % inhibitions of 46.54 and 26.81, respectively. The binding of compound <strong>2f</strong> with the ion Zn301 and its bonding amino acids His 230 and His 226 are noticed to be the characteristic interactions that significantly affect the inhibition of MMP-9 enzyme according to the docking studies.</div></div>","PeriodicalId":20056,"journal":{"name":"Phosphorus, Sulfur, and Silicon and the Related Elements","volume":"200 11","pages":"Pages 866-874"},"PeriodicalIF":1.6,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145195822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-16DOI: 10.1080/10426507.2025.2548582
Somaia M. Abdel-Kariem (Conceptualization Data curation Formal analysis Investigation Methodology Project administration Resources Software Supervision Validation Visualization Writing – original draft Writing – review & editing) , Tarik E. Ali (Data curation Formal analysis Investigation Methodology Resources Software Visualization Writing – original draft Writing – review & editing) , Abeer A. H. Bukhari (Formal analysis Methodology Project administration Supervision Writing – review & editing)
The need to develop powerful antioxidant agents capable of combating resistant infections without compromising human health has motivated significant research for novel antioxidant compounds. In this study, a series of simple 4-amino-5-methyl-4H-1,2,4-triazole-3-thiol-based Schiff bases were synthesized to investigate their potential as potent antioxidant agents. The methodology involved merging aromatic aldehydes, furan, pyrazole, chromone, and coumarin moieties into a single molecular framework, using Amberlite IR-4B as an acidic catalyst. The structures of compounds 2a–m were confirmed through various spectroscopic techniques and elemental analysis. Additionally, theoretical studies, including in silico computations using the Swiss ADME server, molecular modeling, and Density Functional Theory (DFT) calculations, provided further evidence of the efficiency and stability of the synthesized compounds. Among the series, compound 2b exhibited the most prominent antioxidant activity (2.25 ± 0.18 µg/mL), outperforming the standard. Moreover, molecular docking studies revealed that the investigated bioactive compounds occupy the same binding cavity as the well-known antioxidant ascorbic acid (ASC).
{"title":"Synthesis, antioxidant activity, molecular docking, drug likeness and DFT studies of 1,2,4-triazole Schiff bases clubbed with heterocyclic moieties using Amberlite IR-4B as a catalyst","authors":"Somaia M. Abdel-Kariem (Conceptualization Data curation Formal analysis Investigation Methodology Project administration Resources Software Supervision Validation Visualization Writing – original draft Writing – review & editing) , Tarik E. Ali (Data curation Formal analysis Investigation Methodology Resources Software Visualization Writing – original draft Writing – review & editing) , Abeer A. H. Bukhari (Formal analysis Methodology Project administration Supervision Writing – review & editing)","doi":"10.1080/10426507.2025.2548582","DOIUrl":"10.1080/10426507.2025.2548582","url":null,"abstract":"<div><div>The need to develop powerful antioxidant agents capable of combating resistant infections without compromising human health has motivated significant research for novel antioxidant compounds. In this study, a series of simple 4-amino-5-methyl-4<em>H</em>-1,2,4-triazole-3-thiol-based Schiff bases were synthesized to investigate their potential as potent antioxidant agents. The methodology involved merging aromatic aldehydes, furan, pyrazole, chromone, and coumarin moieties into a single molecular framework, using Amberlite IR-4B as an acidic catalyst. The structures of compounds <strong>2a</strong>–<strong>m</strong> were confirmed through various spectroscopic techniques and elemental analysis. Additionally, theoretical studies, including <em>in silico</em> computations using the Swiss ADME server, molecular modeling, and Density Functional Theory (DFT) calculations, provided further evidence of the efficiency and stability of the synthesized compounds. Among the series, compound <strong>2b</strong> exhibited the most prominent antioxidant activity (2.25 ± 0.18 µg/mL), outperforming the standard. Moreover, molecular docking studies revealed that the investigated bioactive compounds occupy the same binding cavity as the well-known antioxidant ascorbic acid (ASC).</div></div>","PeriodicalId":20056,"journal":{"name":"Phosphorus, Sulfur, and Silicon and the Related Elements","volume":"200 11","pages":"Pages 840-854"},"PeriodicalIF":1.6,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145195823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-14DOI: 10.1080/10426507.2025.2548584
Sanjeev Kumar K G (Visualization Writing – original draft) , Parasuraman P (Supervision Writing – review & editing) , Kannan P (Conceptualization Supervision) , Manivannan V (Resources) , Senthil A (Visualization Writing – review & editing)
Phosphorus (P) is an essential nutrient for plant growth and plays a crucial role in various biochemical processes within plants. However, the availability of P in soil is often limited, leading to reduced crop yields and potential environmental issues associated with excessive fertilizer application. Thus, understanding the P status in agricultural soils and implementing effective strategies to enhance P utilization is critical for sustainable crop production. The understanding of P dynamics in soil and its implications for crop productivity is essential for developing innovative approaches and technologies aimed at improving P use efficiency in agriculture. Several factors influence P availability for example, soil properties, nutrient management practices and environmental factors. Further management techniques such as efficient P application methods, breeding for improved P uptake, biofertilizers and bio-inoculants, intercropping and crop rotation, organic amendments, composting, nano-phosphatic fertilizers, variable-rate applicators, and the use of biochar and struvite are resulting greater changes in P availability and use. In addition to this, the environmental implications of excessive P application and mitigation measures are discussed, including soil and water conservation practices, soil P management, nutrient management planning, and policy and outreach strategies. This review emphasizes the need for a holistic approach to P management, considering both agronomic and environmental aspects to achieve sustainable crop production.
{"title":"Phosphorus status and strategies to increase P use efficiency for sustainable crop production","authors":"Sanjeev Kumar K G (Visualization Writing – original draft) , Parasuraman P (Supervision Writing – review & editing) , Kannan P (Conceptualization Supervision) , Manivannan V (Resources) , Senthil A (Visualization Writing – review & editing)","doi":"10.1080/10426507.2025.2548584","DOIUrl":"10.1080/10426507.2025.2548584","url":null,"abstract":"<div><div>Phosphorus (P) is an essential nutrient for plant growth and plays a crucial role in various biochemical processes within plants. However, the availability of P in soil is often limited, leading to reduced crop yields and potential environmental issues associated with excessive fertilizer application. Thus, understanding the P status in agricultural soils and implementing effective strategies to enhance P utilization is critical for sustainable crop production. The understanding of P dynamics in soil and its implications for crop productivity is essential for developing innovative approaches and technologies aimed at improving P use efficiency in agriculture. Several factors influence P availability for example, soil properties, nutrient management practices and environmental factors. Further management techniques such as efficient P application methods, breeding for improved P uptake, biofertilizers and bio-inoculants, intercropping and crop rotation, organic amendments, composting, nano-phosphatic fertilizers, variable-rate applicators, and the use of biochar and struvite are resulting greater changes in P availability and use. In addition to this, the environmental implications of excessive P application and mitigation measures are discussed, including soil and water conservation practices, soil P management, nutrient management planning, and policy and outreach strategies. This review emphasizes the need for a holistic approach to P management, considering both agronomic and environmental aspects to achieve sustainable crop production.</div></div>","PeriodicalId":20056,"journal":{"name":"Phosphorus, Sulfur, and Silicon and the Related Elements","volume":"200 11","pages":"Pages 821-839"},"PeriodicalIF":1.6,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145195818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-13DOI: 10.1080/10426507.2025.2547034
Jian Guan (Investigation) , Yikang Ding (Methodology) , Xin Qian (Validation) , Haoxian Lin (Data curation) , Wenxuan Wang (Investigation) , Zhouting Rong (Supervision Writing – original draft)
A Hg(OTf)2-catalyzed oxygenation reaction has been developed for the divergent synthesis of various oxazoles and 1,2-diketones under mild conditions. This method extends the potential of mercury catalysis and promises to be an inexpensive alternative for the synthesis of oxazoles and 1,2-diketones from a wide range of aryl alkynes.
{"title":"Hg(OTf)2-catalyzed oxygenation of alkynes enables the divergent synthesis of oxazoles and 1,2-diketones","authors":"Jian Guan (Investigation) , Yikang Ding (Methodology) , Xin Qian (Validation) , Haoxian Lin (Data curation) , Wenxuan Wang (Investigation) , Zhouting Rong (Supervision Writing – original draft)","doi":"10.1080/10426507.2025.2547034","DOIUrl":"10.1080/10426507.2025.2547034","url":null,"abstract":"<div><div>A Hg(OTf)<sub>2</sub>-catalyzed oxygenation reaction has been developed for the divergent synthesis of various oxazoles and 1,2-diketones under mild conditions. This method extends the potential of mercury catalysis and promises to be an inexpensive alternative for the synthesis of oxazoles and 1,2-diketones from a wide range of aryl alkynes.</div></div>","PeriodicalId":20056,"journal":{"name":"Phosphorus, Sulfur, and Silicon and the Related Elements","volume":"200 10","pages":"Pages 814-820"},"PeriodicalIF":1.6,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145047847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-13DOI: 10.1080/10426507.2025.2546581
Chenghao Tang (Conceptualization Funding acquisition Writing – original draft Writing – review & editing) , Liang Chen (Data curation) , Qian Wang (Investigation) , Xiaoli Huang (Investigation) , Lanlan Wang (Data curation) , Wenting Yang (Validation) , Yue Zhou (Investigation) , Pei Li (Writing – original draft) , Xiang Wang (Writing – original draft)
A series of novel indole C2 derivatives containing 1,3,4-oxadiazole thioether moiety were designed and synthesized via natural compound indole-2-carboxylic acid as start material, and their biological activities were tested for Pseudomonas syringae pv actinidiae (Psa), Xanthomonas axonopodis pv citri (Xac), and Xanthomonas oryzae pv oryzae (Xoo). Bioassay findings revealed that a subset of the target compounds demonstrated robust antibacterial activities against Psa, Xoo and Xac at concentrations of both 100 and 50 μg/mL. Ongoing research is focused on exploring their bioactive applications, aiming to identify novel indole C2 derivatives and investigate their broad applicability.
{"title":"Design, synthesis and antibacterial evaluation of indole C2 derivatives containing 1,3,4-oxadiazole thioether moiety","authors":"Chenghao Tang (Conceptualization Funding acquisition Writing – original draft Writing – review & editing) , Liang Chen (Data curation) , Qian Wang (Investigation) , Xiaoli Huang (Investigation) , Lanlan Wang (Data curation) , Wenting Yang (Validation) , Yue Zhou (Investigation) , Pei Li (Writing – original draft) , Xiang Wang (Writing – original draft)","doi":"10.1080/10426507.2025.2546581","DOIUrl":"10.1080/10426507.2025.2546581","url":null,"abstract":"<div><div>A series of novel indole C2 derivatives containing 1,3,4-oxadiazole thioether moiety were designed and synthesized <em>via</em> natural compound indole-2-carboxylic acid as start material, and their biological activities were tested for <em>Pseudomonas syringae pv actinidiae</em> (<em>Psa</em>), <em>Xanthomonas axonopodis</em> pv <em>citri</em> (<em>Xac</em>), and <em>Xanthomonas oryzae</em> pv <em>oryzae</em> (<em>Xoo</em>). Bioassay findings revealed that a subset of the target compounds demonstrated robust antibacterial activities against <em>Psa</em>, <em>Xoo</em> and <em>Xac</em> at concentrations of both 100 and 50 μg/mL. Ongoing research is focused on exploring their bioactive applications, aiming to identify novel indole C2 derivatives and investigate their broad applicability.</div></div>","PeriodicalId":20056,"journal":{"name":"Phosphorus, Sulfur, and Silicon and the Related Elements","volume":"200 10","pages":"Pages 805-813"},"PeriodicalIF":1.6,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145047843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-13DOI: 10.1080/10426507.2025.2548583
Oscar F. González-Belman (Data curation Formal analysis Investigation Methodology Validation Writing – original draft Writing – review & editing) , José Oscar C. Jiménez-Halla (Methodology Resources Supervision) , Kenneth J. Shea (Conceptualization Supervision Visualization) , José E. Báez (Conceptualization Formal analysis Investigation Supervision Visualization Writing – original draft Writing – review & editing)
We investigated the polyhomologation of trialkylborane using dimethyl sulfoxonium methylide (Corey’s ylide) as a methylene source. This reaction mechanism produces a linear aliphatic polymer called polymetylene (PM). Our theoretical calculations using density functional theory (DFT) suggest that this polymerization involves two reaction steps: ylide coordination into trialkylborane (BR3) (ate complex) and insertion (1,2-migration) of the methylene unit into a B-R bond, along with the liberation of dimethyl sulfoxide (DMSO) as a by-product. The mechanistic routes of the single-arm, arm-per-arm, and asymmetric propagation of the alkyl chains in the borane were explored, which revealed that the route of symmetric polyhomogation (arm-per-arm) of alkyl borane was favored over the others, leading to polyhomologated boranes with symmetric alkyl chains. With further oxidative treatment, this gave rise to PM with narrow dispersity (ÐM) involving living polymerization as in experimental reports.
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Pub Date : 2025-08-12DOI: 10.1080/10426507.2025.2546582
Manijeh Nematpour (Writing – original draft)
A rapid, efficient, and simple ultrasonic-assisted protocol is reported for the synthesis of benzo thiazol-selenazol skeletons from the one-pot reactions of acyl iso (seleno or thio) cyanate, benzothiazole and various terminal alkynes, in the vicinity of a copper catalyst, without the help of additional ligands under ultrasonic conditions for 45 min with good efficiency. The role of ultrasound in this reaction is to reduce the time, increase the efficiency of product preparation, and make the work-up easier. The use of simple and available raw materials, mild copper catalytic reaction conditions, easy purification with the help of a solvent, and finally, the synthesis of 10 new compounds from the benzo thiazol-selenazol family are notable features of this protocol.
{"title":"A facile synthesis of tricyclic compounds consisting of benzo thiazol-selenazol skeletons via the copper‐catalyzed four-component reactions","authors":"Manijeh Nematpour (Writing – original draft)","doi":"10.1080/10426507.2025.2546582","DOIUrl":"10.1080/10426507.2025.2546582","url":null,"abstract":"<div><div>A rapid, efficient, and simple ultrasonic-assisted protocol is reported for the synthesis of benzo thiazol-selenazol skeletons from the one-pot reactions of acyl iso (seleno or thio) cyanate, benzothiazole and various terminal alkynes, in the vicinity of a copper catalyst, without the help of additional ligands under ultrasonic conditions for 45 min with good efficiency. The role of ultrasound in this reaction is to reduce the time, increase the efficiency of product preparation, and make the work-up easier. The use of simple and available raw materials, mild copper catalytic reaction conditions, easy purification with the help of a solvent, and finally, the synthesis of 10 new compounds from the benzo thiazol-selenazol family are notable features of this protocol.</div></div>","PeriodicalId":20056,"journal":{"name":"Phosphorus, Sulfur, and Silicon and the Related Elements","volume":"200 10","pages":"Pages 797-804"},"PeriodicalIF":1.6,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145047840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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