首页 > 最新文献

Current Organocatalysis最新文献

英文 中文
Kinetic and Mechanistic Study of oxidative Degradation And Detoxification of Fast Yellow Azo Dye Using Surfactant Assisted Ir-Ni Bimetallic Nanocatalyst 表面活性剂辅助Ir-Ni双金属纳米催化剂氧化降解脱毒快黄偶氮染料的动力学及机理研究
IF 1.1 Q4 CHEMISTRY, PHYSICAL Pub Date : 2022-04-07 DOI: 10.2174/2213337209666220407113453
A. Goel, Shikha
Catalytic degradation of azo dye.Azo dyes are toxic agents and pollutants and the degradation of these dyes has an important application in the treatment of textile industry wastes. Catalytic decolorization of fast yellow dye by hexacyanoferrate (III), abbreviated as HCF(III) using polyvinylpyrrolidone abbreviated as PVP stabilized Ir-Ni bimetallic nanocrystals has been evaluated by kinetic spectrophotometric method at 440nm wavelength of the reaction mixture.The impact of various operational factors such as fast yellow dye abbreviated as [FY], oxidant [HCF(III)] ions, promoter iridium-nickel bimetallic nanoparticles abbreviated as [(Ir-Ni)] BMNPs, and solution pH on the rate of the reaction have been examined.The results represent that the reaction follows first -order kinetics model with respect to [oxidant] at optimum pH 8 and fix temperature 40±0.1◦C. Thermodynamic parameters such as activation energy (Ea), enthalpy (ΔH#), entropy (ΔS#), frequency factor (A), and free energy of activation (ΔF#) have been evaluated by examining the reaction rate at four temperatures i.e. 40⁰C, 45⁰C, 50⁰C, and 55⁰C. On the basis of experimental outcomes, an appropriate mechanism involving complex formation has been proposed.Analytical techniques such as UV-Vis spectroscopy, FTIR, and LCMS of degraded products represent the formation of easier and less harmful compounds.
偶氮染料的催化降解。偶氮染料是一种有毒物质和污染物,对偶氮染料的降解在纺织工业废水处理中有着重要的应用。在反应混合物的440nm波长处,用动力学分光光度法考察了六氰铁酸盐(III)(简称HCF(III))与聚乙烯吡咯烷酮(简称PVP稳定Ir-Ni双金属纳米晶体)对坚黄染料的催化脱色效果。考察了各种操作因素如坚黄染料(简写为[FY])、氧化剂[HCF(III)]离子、促进剂铱-镍双金属纳米颗粒(简写为[(Ir-Ni)])和溶液pH对反应速率的影响。结果表明,在最佳pH值为8,固定温度为40±0.1◦C时,与[氧化剂]有关的反应符合一级动力学模型。热力学参数,如活化能(Ea)、焓(ΔH#)、熵(ΔS#)、频率因子(A)和自由活化能(ΔF#)已经通过检查四种温度下的反应速率进行了评估,即40⁰C、45⁰C、50⁰C和55⁰C。在实验结果的基础上,提出了一个涉及复杂形成的适当机制。分析技术,如紫外可见光谱,FTIR,和LCMS降解产物代表更容易和更少有害的化合物的形成。
{"title":"Kinetic and Mechanistic Study of oxidative Degradation And Detoxification of Fast Yellow Azo Dye Using Surfactant Assisted Ir-Ni Bimetallic Nanocatalyst","authors":"A. Goel, Shikha","doi":"10.2174/2213337209666220407113453","DOIUrl":"https://doi.org/10.2174/2213337209666220407113453","url":null,"abstract":"\u0000\u0000Catalytic degradation of azo dye.\u0000\u0000\u0000\u0000Azo dyes are toxic agents and pollutants and the degradation of these dyes has an important application in the treatment of textile industry wastes. Catalytic decolorization of fast yellow dye by hexacyanoferrate (III), abbreviated as HCF(III) using polyvinylpyrrolidone abbreviated as PVP stabilized Ir-Ni bimetallic nanocrystals has been evaluated by kinetic spectrophotometric method at 440nm wavelength of the reaction mixture.\u0000\u0000\u0000\u0000The impact of various operational factors such as fast yellow dye abbreviated as [FY], oxidant [HCF(III)] ions, promoter iridium-nickel bimetallic nanoparticles abbreviated as [(Ir-Ni)] BMNPs, and solution pH on the rate of the reaction have been examined.\u0000\u0000\u0000\u0000The results represent that the reaction follows first -order kinetics model with respect to [oxidant] at optimum pH 8 and fix temperature 40±0.1◦C. Thermodynamic parameters such as activation energy (Ea), enthalpy (ΔH#), entropy (ΔS#), frequency factor (A), and free energy of activation (ΔF#) have been evaluated by examining the reaction rate at four temperatures i.e. 40⁰C, 45⁰C, 50⁰C, and 55⁰C. On the basis of experimental outcomes, an appropriate mechanism involving complex formation has been proposed.\u0000\u0000\u0000\u0000Analytical techniques such as UV-Vis spectroscopy, FTIR, and LCMS of degraded products represent the formation of easier and less harmful compounds.\u0000","PeriodicalId":10945,"journal":{"name":"Current Organocatalysis","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48808238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of Oxadiazole, Imidazole, Benzimidazole, Cyclohexano Analogues of 1, 5-benzodiazepines through phenoxyl/phenylamino linkage 苯氧基/苯胺连锁法合成邻二唑、咪唑、苯并咪唑、1,5 -苯二氮卓类环己基类似物
IF 1.1 Q4 CHEMISTRY, PHYSICAL Pub Date : 2022-04-04 DOI: 10.2174/2212796816666220404151254
M. Mir
To synthesize Oxadiazole, Imidazole, Benzimidazole, and Cyclohexano Analogues of 1, 5-benzodiazepines through phenoxyl/phenylamino linkageIt is worthwhile to mention that Imidazoles, benzimidazoles, oxadiazoles, are analysed extensively mainly as per their ready availability, broad chemical reactivity, and wide spectrum of biochemical activities, like antimicrobial, anti-inflammatory, antitumor, anticonvulsant drugs, anti-tubercular medicines, and having anti-HIV effect etc.The Oxadiazole, Imidazole, Benzimidazole derivatives were synthesized via Cyclohexano Analogues of 1, 5-benzodiazepines through phenoxyl/phenylamino linkage.The characteristic drift of our interest towards these molecules prompted us to think about the structural modification of [1, 5]-benzodiazepine compound by incorporating on its 2-position imidazole, benzimidazole, oxadiazole, nuclei through an aminophenyl or phenoxyl bridge to synthesize these novel heterocyclic analogues of 1, 5-benzodiazepines.These derivatives have been analysed by various spectrophometric techniques like UV, IR, NMR, and MS. The synthesis of these compounds via the mentioned methods are unique as Cyclohexano Analogues of 1, 5-benzodiazepines through phenoxyl/phenylamino is a totally new way of synthesis. The derivatives can be analysed for various properties in chemistry and pharmacology, as their parent compounds has many pharmacological properties.The synthesis of these types of compounds does provide a new hope to medicinal and pharmaceutical industries. Therefore further efforts should be taken into consideration for their synthesis and analysis of their medicinal properties.
值得一提的是,咪唑类、苯并咪唑类、恶二唑类药物主要根据其易获得性、广泛的化学反应性和广谱的生化活性,如抗菌、抗炎、抗肿瘤、抗痉挛、抗结核药物、抗艾滋病病毒作用等,对其进行了广泛的分析。以1,5 -苯二氮卓类环己基类似物为原料,通过苯氧基/苯胺键合成咪唑、苯并咪唑衍生物。我们对这些分子的兴趣的特征漂移促使我们考虑在[1,5]-苯二氮卓化合物的2位咪唑、苯并咪唑、恶二唑的核上通过氨基苯基或苯氧基桥结合结构修饰,以合成这些新的1,5 -苯二氮卓类杂环类似物。通过紫外、红外、核磁共振和质谱等各种分光光度技术对这些衍生物进行了分析,通过上述方法合成这些化合物是独一无二的,因为通过苯氧基/苯胺合成1,5 -苯二氮卓类环己基类似物是一种全新的合成方法。由于其母体化合物具有许多药理性质,因此可以对其衍生物进行化学和药理学分析。这类化合物的合成确实给医药工业带来了新的希望。因此,它们的合成和药用性质的分析应进一步加以考虑。
{"title":"Synthesis of Oxadiazole, Imidazole, Benzimidazole, Cyclohexano Analogues of 1, 5-benzodiazepines through phenoxyl/phenylamino linkage","authors":"M. Mir","doi":"10.2174/2212796816666220404151254","DOIUrl":"https://doi.org/10.2174/2212796816666220404151254","url":null,"abstract":"\u0000\u0000To synthesize Oxadiazole, Imidazole, Benzimidazole, and Cyclohexano Analogues of 1, 5-benzodiazepines through phenoxyl/phenylamino linkage\u0000\u0000\u0000\u0000It is worthwhile to mention that Imidazoles, benzimidazoles, oxadiazoles, are analysed extensively mainly as per their ready availability, broad chemical reactivity, and wide spectrum of biochemical activities, like antimicrobial, anti-inflammatory, antitumor, anticonvulsant drugs, anti-tubercular medicines, and having anti-HIV effect etc.\u0000\u0000\u0000\u0000The Oxadiazole, Imidazole, Benzimidazole derivatives were synthesized via Cyclohexano Analogues of 1, 5-benzodiazepines through phenoxyl/phenylamino linkage.\u0000\u0000\u0000\u0000The characteristic drift of our interest towards these molecules prompted us to think about the structural modification of [1, 5]-benzodiazepine compound by incorporating on its 2-position imidazole, benzimidazole, oxadiazole, nuclei through an aminophenyl or phenoxyl bridge to synthesize these novel heterocyclic analogues of 1, 5-benzodiazepines.\u0000\u0000\u0000\u0000These derivatives have been analysed by various spectrophometric techniques like UV, IR, NMR, and MS. The synthesis of these compounds via the mentioned methods are unique as Cyclohexano Analogues of 1, 5-benzodiazepines through phenoxyl/phenylamino is a totally new way of synthesis. The derivatives can be analysed for various properties in chemistry and pharmacology, as their parent compounds has many pharmacological properties.\u0000\u0000\u0000\u0000The synthesis of these types of compounds does provide a new hope to medicinal and pharmaceutical industries. Therefore further efforts should be taken into consideration for their synthesis and analysis of their medicinal properties.\u0000","PeriodicalId":10945,"journal":{"name":"Current Organocatalysis","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42814058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Kinetics and mechanism of reduction of hexacholoroiridate (IV) by carcinogenic nicotine as alkaloid in aqueous solutions with determination of ionization constant of nicotine 水溶液中致癌生物碱烟碱还原六氯铱酸盐(IV)的动力学和机理及烟碱电离常数的测定
IF 1.1 Q4 CHEMISTRY, PHYSICAL Pub Date : 2022-03-29 DOI: 10.2174/2213337209666220329141541
R. Hassan, S. Ibrahim
Nicotine (NIC) is a lipid soluble alkaloid found predominately in tobacco and tobacco products including cigarettes, cigars and oral tobacco products such as snuff and chewing tobacco. Since nicotine substrate is the major constituent of tobacco smoke, it may cause negatively impacted problems to the human healthcare which keeps many users hooked.A spectrophotometric technique has been applied for investigating the kinetics of reduction of hexachloroiridiate (IV) as inert one-equivalent oxidant by carcinogenic nicotine (NIC) in aqueous perchlorate solutions.First-order in [IrCl6]2- and fractional-first-order with respect to the nicotine concentration has been revealed. Kinetic evidence for formation of 1: 1 intermediate complex between the NIC and [IrCl6]2- prior to the rate-determining step was confirmed.The ionization constants of nicotine was evaluated from the kinetic data and has been found to be 8.57x10-4 and 4.57 x 10-4 moldm-3 at ionic strength of 0.5 moldm-3 and at 30˚C and 40˚C, respectively. The activation parameters have been deduced from the kinetic results of the temperature-dependence of rate constants and a plausible reaction mechanism of the redox reaction is suggested and discussed. Nicotinic acid (Vitamin B3) was formed as oxidation product of nicotine oxidation.
尼古丁(NIC)是一种脂溶性生物碱,主要存在于烟草和烟草制品中,包括香烟、雪茄和口服烟草制品,如鼻烟和嚼烟。由于尼古丁底物是烟草烟雾的主要成分,它可能对人体健康造成负面影响,使许多使用者上瘾。采用分光光度法研究了致癌物质尼古丁(NIC)在高氯酸水溶液中还原惰性一当量氧化剂六氯iridiate (IV)的动力学。[IrCl6]2的一阶和分数一阶与尼古丁浓度的关系已被揭示。在速率决定步骤之前,NIC和[IrCl6]2-之间形成1:1中间配合物的动力学证据得到了证实。在离子强度为0.5 moldm-3和30℃、40℃条件下,尼古丁的电离常数分别为8.57 × 10-4和4.57 × 10-4 moldm-3。根据速率常数随温度变化的动力学结果推导出了活化参数,并对氧化还原反应的反应机理进行了讨论。烟酸(维生素B3)是尼古丁氧化的氧化产物。
{"title":"Kinetics and mechanism of reduction of hexacholoroiridate (IV) by carcinogenic nicotine as alkaloid in aqueous solutions with determination of ionization constant of nicotine","authors":"R. Hassan, S. Ibrahim","doi":"10.2174/2213337209666220329141541","DOIUrl":"https://doi.org/10.2174/2213337209666220329141541","url":null,"abstract":"\u0000\u0000Nicotine (NIC) is a lipid soluble alkaloid found predominately in tobacco and tobacco products including cigarettes, cigars and oral tobacco products such as snuff and chewing tobacco. Since nicotine substrate is the major constituent of tobacco smoke, it may cause negatively impacted problems to the human healthcare which keeps many users hooked.\u0000\u0000\u0000\u0000A spectrophotometric technique has been applied for investigating the kinetics of reduction of hexachloroiridiate (IV) as inert one-equivalent oxidant by carcinogenic nicotine (NIC) in aqueous perchlorate solutions.\u0000\u0000\u0000\u0000First-order in [IrCl6]2- and fractional-first-order with respect to the nicotine concentration has been revealed. Kinetic evidence for formation of 1: 1 intermediate complex between the NIC and [IrCl6]2- prior to the rate-determining step was confirmed.\u0000\u0000\u0000\u0000The ionization constants of nicotine was evaluated from the kinetic data and has been found to be 8.57x10-4 and 4.57 x 10-4 moldm-3 at ionic strength of 0.5 moldm-3 and at 30˚C and 40˚C, respectively. The activation parameters have been deduced from the kinetic results of the temperature-dependence of rate constants and a plausible reaction mechanism of the redox reaction is suggested and discussed. Nicotinic acid (Vitamin B3) was formed as oxidation product of nicotine oxidation.\u0000","PeriodicalId":10945,"journal":{"name":"Current Organocatalysis","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47733748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Magnetically Recyclable Ag@Fe2O3 Core-shell Nanostructured Catalyst for One-pot Synthesis of 2-Aryl Benzimidazole and Benzothiazole 磁性可回收Ag@Fe2O3一锅合成2-芳基苯并咪唑和苯并噻唑的核壳纳米结构催化剂
IF 1.1 Q4 CHEMISTRY, PHYSICAL Pub Date : 2022-03-29 DOI: 10.2174/2213337209666220329125047
Gayatree Shinde, Jyotsna Thakur
Nanocatalysts exhibit several applications in the synthesis of many industrially important organic compounds. They manifest extremely fascinating physical and chemical properties which can be exploited in their catalytic applications.A magnetically recyclable Ag@Fe2O3 core-shell structured nanocatalyst was synthesized by a simple sol-gel technique and characterized by x-ray diffraction spectroscopy, field emission scanning electron microscope, high-resolution transmission electron microscopy, fourier transform infrared spectroscopy, vibrating sample magnetometer etc. Nanocatalyst was found to be a highly efficient heterogeneous catalyst for the synthesis of 2-aryl benzimidazoles and benzothiazoles via one-pot condensation of aromatic aldehydes and 1, 2-phenylenediamine, and 2-aminothiophenol.Ag@Fe2O3 nanocatalyst provides rapid conversion of the substrate into the desired product at room temperature within just 5-18 min in the presence of C2H5OH with good to excellent yield. The combination of Ag core with magnetic Fe2O3 shell results in improved efficiency, stability, magnetic recovery, and reusability compare to the individual nanoparticles.The synthetic protocol is featured with high yield, mild conditions, and simple work-up. Magnetic recovery of the catalyst from reaction systems and its reusability for several runs without loss of catalytic activity are additional advantages.
纳米催化剂在许多工业上重要的有机化合物的合成中有多种应用。它们表现出非常迷人的物理和化学性质,可以在催化应用中加以利用。采用简单的溶胶-凝胶法合成了一种磁性可回收的Ag@Fe2O3核壳结构纳米催化剂,并通过x射线衍射光谱、场发射扫描电镜、高分辨率透射电镜、傅里叶变换红外光谱、振动样品磁强计等手段对其进行了表征。研究发现,纳米催化剂是芳香醛与1,2 -苯二胺和2-氨基噻吩一锅缩合合成2-芳基苯并咪唑和苯并噻唑的高效非均相催化剂。Ag@Fe2O3纳米催化剂在室温下,在C2H5OH的存在下,仅需5-18分钟即可将底物快速转化为所需的产物,收率很高。与单个纳米颗粒相比,银芯与磁性Fe2O3壳的结合提高了效率、稳定性、磁性回收率和可重用性。该合成工艺具有收率高、条件温和、工序简单等特点。催化剂的磁性回收反应体系和它的可重复使用的几次运行而不损失催化活性是额外的优势。
{"title":"Magnetically Recyclable Ag@Fe2O3 Core-shell Nanostructured Catalyst for One-pot Synthesis of 2-Aryl Benzimidazole and Benzothiazole","authors":"Gayatree Shinde, Jyotsna Thakur","doi":"10.2174/2213337209666220329125047","DOIUrl":"https://doi.org/10.2174/2213337209666220329125047","url":null,"abstract":"\u0000\u0000Nanocatalysts exhibit several applications in the synthesis of many industrially important organic compounds. They manifest extremely fascinating physical and chemical properties which can be exploited in their catalytic applications.\u0000\u0000\u0000\u0000A magnetically recyclable Ag@Fe2O3 core-shell structured nanocatalyst was synthesized by a simple sol-gel technique and characterized by x-ray diffraction spectroscopy, field emission scanning electron microscope, high-resolution transmission electron microscopy, fourier transform infrared spectroscopy, vibrating sample magnetometer etc. Nanocatalyst was found to be a highly efficient heterogeneous catalyst for the synthesis of 2-aryl benzimidazoles and benzothiazoles via one-pot condensation of aromatic aldehydes and 1, 2-phenylenediamine, and 2-aminothiophenol.\u0000\u0000\u0000\u0000Ag@Fe2O3 nanocatalyst provides rapid conversion of the substrate into the desired product at room temperature within just 5-18 min in the presence of C2H5OH with good to excellent yield. The combination of Ag core with magnetic Fe2O3 shell results in improved efficiency, stability, magnetic recovery, and reusability compare to the individual nanoparticles.\u0000\u0000\u0000\u0000The synthetic protocol is featured with high yield, mild conditions, and simple work-up. Magnetic recovery of the catalyst from reaction systems and its reusability for several runs without loss of catalytic activity are additional advantages.\u0000","PeriodicalId":10945,"journal":{"name":"Current Organocatalysis","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46429658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Succinimide based reagents: Useful catalysts for important organic reactions 琥珀酰亚胺基试剂:用于重要有机反应的有用催化剂
IF 1.1 Q4 CHEMISTRY, PHYSICAL Pub Date : 2022-03-22 DOI: 10.2174/2213337209666220322115802
M. Abedini, Reyhaneh Pourhasan Kisomi, F. Shirini
The aim of this work is an overview on the application of succinimide based reagents to the promotion of some important organic reactions including protection and multicomponent ones. Mild reaction conditions, simple and easy work-up procedure, high to excellent yields, and stability, and reusability of the catalysts are noteworthy advantages of these methods.
本文综述了琥珀酰亚胺类试剂在促进一些重要的有机反应中的应用,包括保护反应和多组分反应。该方法具有反应条件温和、工艺简单、收率高、催化剂稳定性好、可重复使用等优点。
{"title":"Succinimide based reagents: Useful catalysts for important organic reactions","authors":"M. Abedini, Reyhaneh Pourhasan Kisomi, F. Shirini","doi":"10.2174/2213337209666220322115802","DOIUrl":"https://doi.org/10.2174/2213337209666220322115802","url":null,"abstract":"\u0000\u0000The aim of this work is an overview on the application of succinimide based reagents to the promotion of some important organic reactions including protection and multicomponent ones. Mild reaction conditions, simple and easy work-up procedure, high to excellent yields, and stability, and reusability of the catalysts are noteworthy advantages of these methods.\u0000","PeriodicalId":10945,"journal":{"name":"Current Organocatalysis","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45799093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Condensation Reactions of Aromatic Aldehydes with Active Methylene Compounds: The Beneficial Sinergy of Alkaline Ionic Liquid in One Pot Synthesis 芳香醛与活性亚甲基化合物的缩合反应:碱性离子液体一锅法合成的有利条件
IF 1.1 Q4 CHEMISTRY, PHYSICAL Pub Date : 2022-03-01 DOI: 10.2174/2213337209666220301123926
Swapnil R. Bankar
In recent times, there is an on-going interest in developing convenient and environmentally friendly synthetic methods in organic chemistry. The use of ionic liquid catalysts in organic synthesis is a developing area that allows reactions to be run at low temperature and without solvents. Literature overview revealed that room temperature supported ionic liquid catalysis is a developing field in catalytic science with huge application in organic synthesis. Hence in this current article our focus is on the one-pot synthesis of arylidene derivatives with the use of ([bmim]OH) ionic liquid.We describe here the use of an ionic liquid catalyst, 1-n-butyl-3-methylimidazolium hydroxide, [bmim]OH), in the convenient one pot synthesis of arylidene derivatives by the reaction of the active methylene compound, malononitrile, with pyrazole aromatic aldehydes under microwave irradiation.The functionalized ionic liquid, 1-n-butyl-3-methylimidazolium hydroxide ([bmim]OH) catalyzed Knoevenagel condensation reactions of pyrazole aromatic aldehydes with active methylene compound malononitrile carried out under microwave irradiation. The reaction progress was monitored by thin layer chromatography and the synthesized compounds were further characterized by NMR spectroscopy.This proposed work demonstrate the utility of the use of the ionic liquid catalyst [bmim]OH, in the suitable, high yield (80-95%) microwave assisted reactions of pyrazole aromatic aldehydes with the active methylene compound malononitrile.An eco-friendly synthesis of pyrazole derivatives has been demonstrated using ([bmim]OH) ionic liquid as a catalyst for the Knoevenagel condensation reactions of pyrazole aromatic aldehydes and malononitrile with microwave irradiation. The advantages of this green method are its convenience, mild reaction conditions, and high product yields (80-95%).
近年来,人们对在有机化学中开发方便和环境友好的合成方法越来越感兴趣。离子液体催化剂在有机合成中的应用是一个发展中的领域,它允许反应在低温和无溶剂的情况下进行。文献综述表明,室温支持的离子液体催化是催化科学的一个发展领域,在有机合成中有着巨大的应用。因此,在本文中,我们的重点是使用([bmim]OH)离子液体一锅合成亚芳基衍生物。我们在此描述了离子液体催化剂1-正丁基-3-甲基咪唑鎓氢氧化物[bmim]OH)在微波辐射下通过活性亚甲基化合物丙二腈与吡唑芳香醛的反应方便地一锅合成芳基衍生物中的用途。功能化离子液体1-正丁基-3-甲基咪唑鎓氢氧化物([bmim]OH)在微波辐射下催化吡唑芳香醛与活性亚甲基化合物丙二腈的Knoevenagel缩合反应。通过薄层色谱法监测反应进展,并通过NMR光谱进一步表征合成的化合物。这项拟议的工作证明了离子液体催化剂[bmim]OH在吡唑芳香醛与活性亚甲基化合物丙二腈的合适、高产率(80-95%)微波辅助反应中的用途。以([bmim]OH)离子液体为催化剂,在微波辐射下进行吡唑芳香醛和丙二腈的Knoevenagel缩合反应,证明了吡唑衍生物的环保合成。这种绿色方法的优点是它方便,反应条件温和,产物产率高(80-95%)。
{"title":"Condensation Reactions of Aromatic Aldehydes with Active Methylene Compounds: The Beneficial Sinergy of Alkaline Ionic Liquid in One Pot Synthesis","authors":"Swapnil R. Bankar","doi":"10.2174/2213337209666220301123926","DOIUrl":"https://doi.org/10.2174/2213337209666220301123926","url":null,"abstract":"\u0000\u0000In recent times, there is an on-going interest in developing convenient and environmentally friendly synthetic methods in organic chemistry. The use of ionic liquid catalysts in organic synthesis is a developing area that allows reactions to be run at low temperature and without solvents. Literature overview revealed that room temperature supported ionic liquid catalysis is a developing field in catalytic science with huge application in organic synthesis. Hence in this current article our focus is on the one-pot synthesis of arylidene derivatives with the use of ([bmim]OH) ionic liquid.\u0000\u0000\u0000\u0000We describe here the use of an ionic liquid catalyst, 1-n-butyl-3-methylimidazolium hydroxide, [bmim]OH), in the convenient one pot synthesis of arylidene derivatives by the reaction of the active methylene compound, malononitrile, with pyrazole aromatic aldehydes under microwave irradiation.\u0000\u0000\u0000\u0000The functionalized ionic liquid, 1-n-butyl-3-methylimidazolium hydroxide ([bmim]OH) catalyzed Knoevenagel condensation reactions of pyrazole aromatic aldehydes with active methylene compound malononitrile carried out under microwave irradiation. The reaction progress was monitored by thin layer chromatography and the synthesized compounds were further characterized by NMR spectroscopy.\u0000\u0000\u0000\u0000This proposed work demonstrate the utility of the use of the ionic liquid catalyst [bmim]OH, in the suitable, high yield (80-95%) microwave assisted reactions of pyrazole aromatic aldehydes with the active methylene compound malononitrile.\u0000\u0000\u0000\u0000An eco-friendly synthesis of pyrazole derivatives has been demonstrated using ([bmim]OH) ionic liquid as a catalyst for the Knoevenagel condensation reactions of pyrazole aromatic aldehydes and malononitrile with microwave irradiation. The advantages of this green method are its convenience, mild reaction conditions, and high product yields (80-95%).\u0000","PeriodicalId":10945,"journal":{"name":"Current Organocatalysis","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47610331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Highly efficient, reusable functionalized pyridinium salts as a catalyst for the simple and cost-effective preparation of tetrahydro[b]benzopyran derivatives 高效、可重复使用的官能化吡啶鎓盐作为催化剂,用于简单且经济高效地制备四氢[b]苯并吡喃衍生物
IF 1.1 Q4 CHEMISTRY, PHYSICAL Pub Date : 2022-02-17 DOI: 10.2174/2213337209666220217112937
Saida Benzerka, M. Redouane, Naima Khiri-Meribout, A. Debache
In this work, a series of pyridinium-based ionic liquids (PBILs) were synthesized.Pyridinium-based ionic liquids (PBILs) were synthesized through a simple method, which was initially evaluated as catalysts for the synthesis of tetrahydro[b]benzopyran derivatives via a one-pot three-component reaction involving aldehydes, malononitrile, and dimedone.The PBILs perform well in this condensation reaction, especially 1-methylpyridin-1-ium dimethyl phosphate (MPDMP).The advantages of this procedure are good yields, short reaction time, simplicity of implementation, and inexpensive starting materials.
本文合成了一系列吡啶基离子液体。通过一种简单的方法合成了吡啶基离子液体(PBILs),该方法最初被评估为通过涉及醛、丙二腈和二酮的一锅三组分反应合成四氢[b]苯并吡喃衍生物的催化剂。PBILs在该缩合反应中表现良好,尤其是1-甲基吡啶-1-二甲基磷酸铵(MPDMP)。该方法的优点是产率高、反应时间短、实施简单和原料便宜。
{"title":"Highly efficient, reusable functionalized pyridinium salts as a catalyst for the simple and cost-effective preparation of tetrahydro[b]benzopyran derivatives","authors":"Saida Benzerka, M. Redouane, Naima Khiri-Meribout, A. Debache","doi":"10.2174/2213337209666220217112937","DOIUrl":"https://doi.org/10.2174/2213337209666220217112937","url":null,"abstract":"\u0000\u0000In this work, a series of pyridinium-based ionic liquids (PBILs) were synthesized.\u0000\u0000\u0000\u0000Pyridinium-based ionic liquids (PBILs) were synthesized through a simple method, which was initially evaluated as catalysts for the synthesis of tetrahydro[b]benzopyran derivatives via a one-pot three-component reaction involving aldehydes, malononitrile, and dimedone.\u0000\u0000\u0000\u0000The PBILs perform well in this condensation reaction, especially 1-methylpyridin-1-ium dimethyl phosphate (MPDMP).\u0000\u0000\u0000\u0000The advantages of this procedure are good yields, short reaction time, simplicity of implementation, and inexpensive starting materials.\u0000","PeriodicalId":10945,"journal":{"name":"Current Organocatalysis","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43989093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Editorial 编辑
IF 1.1 Q4 CHEMISTRY, PHYSICAL Pub Date : 2022-02-01 DOI: 10.2174/221333720901220328164523
Aparna Das, B. Banik
{"title":"Editorial","authors":"Aparna Das, B. Banik","doi":"10.2174/221333720901220328164523","DOIUrl":"https://doi.org/10.2174/221333720901220328164523","url":null,"abstract":"","PeriodicalId":10945,"journal":{"name":"Current Organocatalysis","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44654648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Meet the Editorial Board Member 会见编辑委员会成员
IF 1.1 Q4 CHEMISTRY, PHYSICAL Pub Date : 2022-02-01 DOI: 10.2174/221333720901220328154727
Bubun Banerjee
{"title":"Meet the Editorial Board Member","authors":"Bubun Banerjee","doi":"10.2174/221333720901220328154727","DOIUrl":"https://doi.org/10.2174/221333720901220328154727","url":null,"abstract":"","PeriodicalId":10945,"journal":{"name":"Current Organocatalysis","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41915909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Microwave-assisted, [Bmim]HSO4-catalyzed the Friedländer quinoline synthesis of quinoline under solvent-free conditions 微波辅助下,[Bmim] hso4在无溶剂条件下催化Friedländer喹啉合成
IF 1.1 Q4 CHEMISTRY, PHYSICAL Pub Date : 2022-01-27 DOI: 10.2174/2213337209666220127142333
D. Duc, V. C. Dung
An efficient and green method for the Friedländer quinoline synthesis is described. The synthesis was performed under microwave irradiation using ionic liquid [Bmim]HSO4 as a catalyst. A diverse range of quinoline derivatives was obtained in high yields from 2‐aminoaryl aldehydes and ketones under solvent-free conditions.
介绍了一种高效、绿色的Friedländer喹啉合成方法。使用离子液体[Bmim]HSO4作为催化剂在微波辐射下进行合成。在无溶剂条件下,2-氨基芳基醛和酮以高产率获得了各种喹啉衍生物。
{"title":"Microwave-assisted, [Bmim]HSO4-catalyzed the Friedländer quinoline synthesis of quinoline under solvent-free conditions","authors":"D. Duc, V. C. Dung","doi":"10.2174/2213337209666220127142333","DOIUrl":"https://doi.org/10.2174/2213337209666220127142333","url":null,"abstract":"\u0000\u0000An efficient and green method for the Friedländer quinoline synthesis is described. The synthesis was performed under microwave irradiation using ionic liquid [Bmim]HSO4 as a catalyst. A diverse range of quinoline derivatives was obtained in high yields from 2‐aminoaryl aldehydes and ketones under solvent-free conditions.\u0000","PeriodicalId":10945,"journal":{"name":"Current Organocatalysis","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41835167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Current Organocatalysis
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1