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Manganese Promoted Reductive Cross‐Coupling of Phosphine Chlorides with Disulfides for the Synthesis of Thiophosphanes 锰促进氯代膦与二硫化物的还原交偶联合成硫代膦
IF 4.4 2区 化学 Q2 CHEMISTRY, APPLIED Pub Date : 2025-04-01 DOI: 10.1002/adsc.202401395
Chao‐Peng Zhang , Tian‐Zhang Wang , Zhong‐Jiang Yang , Yu‐Feng Liang
Herein we reported a manganese promoted reductive cross‐coupling approach to construct P−S bond. This is a practical method for the synthesis of mono‐thiophosphanes, bis‐thiophosphanes and tri‐thiophosphanes under mild conditions. The strategy featured a wide range of substrate scope including various disulfides and phosphine chlorides, constructing diverse sulfur‐containing organophosphorus compounds from inodorous and readily available starting materials. The employment of reductive conditions avoided the generation of phosphorothioates (PV) by‐products. Ultimately, gram‐scale synthesis and applications were explored. Extensive experiments indicated that the phosphine radical cascade process was involved in the catalytic cycle.
本文报道了一种锰促进的还原交叉偶联方法来构建P-S键。这是一种在温和条件下合成单硫代膦、双硫代膦和三硫代膦的实用方法。该策略的特点是广泛的底物范围,包括各种二硫化物和氯化物,从恶臭和容易获得的原料中构建各种含硫有机磷化合物。采用还原性条件避免了产生硫代磷酸酯(PV)副产物。最后,对克级合成和应用进行了探索。大量实验表明,催化循环中参与了膦自由基级联过程。
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引用次数: 0
One‐pot Synthesis of 2H‐imidazoles from 1,2‐Diketones, Ketones, and Ammonium Acetate
IF 5.4 2区 化学 Q2 CHEMISTRY, APPLIED Pub Date : 2025-04-01 DOI: 10.1002/adsc.202500094
Bin Tan, Hanming Yang, Feng Zhao
Herein, we report a multicomponent reaction for the efficient synthesis of polysubstituted 2H‐imidazoles from readily available 1,2‐diketones, ketones, and ammonium acetate under transition‐metal‐free conditions. Both nitrogen atoms in the resulting 2H‐imidazole products are derived from the cost‐effective inorganic ammonium acetate. This protocol achieves the cleavage of three C–O bonds and the formation of four C–N bonds in a single operation. The advantages of this protocol include low cost, broad substrate scope, good functional group tolerance, and high atom‐ and step‐economy.
{"title":"One‐pot Synthesis of 2H‐imidazoles from 1,2‐Diketones, Ketones, and Ammonium Acetate","authors":"Bin Tan, Hanming Yang, Feng Zhao","doi":"10.1002/adsc.202500094","DOIUrl":"https://doi.org/10.1002/adsc.202500094","url":null,"abstract":"Herein, we report a multicomponent reaction for the efficient synthesis of polysubstituted 2H‐imidazoles from readily available 1,2‐diketones, ketones, and ammonium acetate under transition‐metal‐free conditions. Both nitrogen atoms in the resulting 2H‐imidazole products are derived from the cost‐effective inorganic ammonium acetate. This protocol achieves the cleavage of three C–O bonds and the formation of four C–N bonds in a single operation. The advantages of this protocol include low cost, broad substrate scope, good functional group tolerance, and high atom‐ and step‐economy.","PeriodicalId":118,"journal":{"name":"Advanced Synthesis & Catalysis","volume":"1 1","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Raney Nickel‐Catalyzed Deuterium Labeling of Nitrogen Containing Heterocycles and Pharmaceuticals under Continuous Flow Conditions Raney Nickel 在连续流动条件下催化含氮杂环和药物的氘标记
IF 4.4 2区 化学 Q2 CHEMISTRY, APPLIED Pub Date : 2025-04-01 DOI: 10.1002/adsc.202400168
Ferenc Minya , Ádám Mészáros , Eszter Csizmadia , Dávid Suskó , Mounir Raji , Gellért Sipos
Deuterium‐labeled compounds play a pivotal role in physical organic chemistry, life sciences, and materials science. This has resulted in a surge of interest in deuterium‐labeled active pharmaceutical ingredients in recent years. In this study, we present a continuous flow Raney nickel‐catalyzed hydrogen isotope exchange process that boasts compatibility with a wide spectrum of nitrogen‐containing heterocycles and pharmaceutical compounds. The broad applicability of the developed method was demonstrated through successful labeling of various purine bases, imidazoles, pyridines, and active pharmaceutical ingredients, including complex structures like abacavir and remdesivir. Control experiments revealed Raney nickel‘s crucial role in the exchange process, showcasing the superiority of the continuous flow approach over batch reactions. Furthermore, a scaled‐up experiment demonstrated the robustness of the catalyst.
氘标记化合物在物理有机化学、生命科学和材料科学中发挥着举足轻重的作用。因此,近年来人们对氘标记活性药物成分的兴趣大增。在本研究中,我们介绍了一种连续流 Raney 镍催化氢同位素交换工艺,该工艺与多种含氮杂环和药物化合物兼容。通过成功标记各种嘌呤碱、咪唑、吡啶和活性药物成分,包括阿巴卡韦和雷米替韦等复杂结构,证明了所开发方法的广泛适用性。对照实验揭示了雷尼镍在交换过程中的关键作用,展示了连续流方法优于间歇反应的优势。此外,放大实验也证明了催化剂的稳定性。
{"title":"Raney Nickel‐Catalyzed Deuterium Labeling of Nitrogen Containing Heterocycles and Pharmaceuticals under Continuous Flow Conditions","authors":"Ferenc Minya ,&nbsp;Ádám Mészáros ,&nbsp;Eszter Csizmadia ,&nbsp;Dávid Suskó ,&nbsp;Mounir Raji ,&nbsp;Gellért Sipos","doi":"10.1002/adsc.202400168","DOIUrl":"10.1002/adsc.202400168","url":null,"abstract":"<div><div>Deuterium‐labeled compounds play a pivotal role in physical organic chemistry, life sciences, and materials science. This has resulted in a surge of interest in deuterium‐labeled active pharmaceutical ingredients in recent years. In this study, we present a continuous flow Raney nickel‐catalyzed hydrogen isotope exchange process that boasts compatibility with a wide spectrum of nitrogen‐containing heterocycles and pharmaceutical compounds. The broad applicability of the developed method was demonstrated through successful labeling of various purine bases, imidazoles, pyridines, and active pharmaceutical ingredients, including complex structures like abacavir and remdesivir. Control experiments revealed Raney nickel‘s crucial role in the exchange process, showcasing the superiority of the continuous flow approach over batch reactions. Furthermore, a scaled‐up experiment demonstrated the robustness of the catalyst.</div></div>","PeriodicalId":118,"journal":{"name":"Advanced Synthesis & Catalysis","volume":"367 7","pages":"Article e202400168"},"PeriodicalIF":4.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140942857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Iron Catalyzed Radical Alkylation of Cyclic Ketimines with Olefins via Metal Hydride Atom Transfer 金属氢化物原子转移催化环酮胺与烯烃自由基烷基化反应
IF 4.4 2区 化学 Q2 CHEMISTRY, APPLIED Pub Date : 2025-04-01 DOI: 10.1002/adsc.202401430
Xixi Hu , Ruizhi Sun , Yu Tian , Xinyue Xu , Yijia Zhu , Hui Liu , Dong Liu , Lizhi Zhang
Here, we present an innovative approach to achieve Minisci‐type alkylation of cyclic N‐ketimines, enabling access to a diverse range of valuable alkylated sulfonyl ketimines via iron hydride hydrogen atom transfer. More than 35 examples are shown with a wide range of substrates. Additionally, this system is easy to operate and can be efficiently scaled up. Mechanistic investigations revealed that the alkyl radical process involved and the air acts as the sole oxidant in this system.
在这里,我们提出了一种创新的方法来实现环n -酮胺的微型烷基化,使通过氢化铁氢原子转移获得各种有价值的烷基化磺酰基酮胺。超过35个例子显示了广泛的基板。此外,该系统易于操作,可以有效地扩大规模。机理研究表明,烷基自由基过程参与其中,空气是该体系中唯一的氧化剂。
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引用次数: 0
Recent Advances in Iodine‐Mediated Radical Reactions
IF 4.4 2区 化学 Q2 CHEMISTRY, APPLIED Pub Date : 2025-04-01 DOI: 10.1002/adsc.202401486
Wen Yang , Jian Guo , Samual Hee , Yu Chen
Over the past two decades, iodine‐mediated free radical reactions have been extensively explored and employed in chemical transformations that complement traditional ionic reactions. In this review, we have updated the progress of the iodine‐mediated radical reactions in organic synthesis reported between 2015 and mid‐2024, and organized the reactions according to their mechanistic pathways. In general, the proposed mechanisms can be divided into four categories based on the radical initiation or its preceding steps, namely, (1) formation of a covalent X−I (X=C, N, S, Se) bond, which subsequently participates in a radical reaction; (2) formation of a noncovalent N⋅⋅⋅I bond, which assists the homolysis of the I−I bond; (3) formation of the key iodine radicals by visible‐light or heat induced homolysis of I2 or by electrochemical oxidation of iodide; (4) iodine induced peroxide decomposition via single electron transfer (SET) mechanism to generate alkoxy or alkyl peroxy radicals. We hope this review will provide readers with a comprehensive update on the iodine‐mediated radical reactions, thereby further inspiring more exciting advances in this emerging field.
{"title":"Recent Advances in Iodine‐Mediated Radical Reactions","authors":"Wen Yang ,&nbsp;Jian Guo ,&nbsp;Samual Hee ,&nbsp;Yu Chen","doi":"10.1002/adsc.202401486","DOIUrl":"10.1002/adsc.202401486","url":null,"abstract":"<div><div>Over the past two decades, iodine‐mediated free radical reactions have been extensively explored and employed in chemical transformations that complement traditional ionic reactions. In this review, we have updated the progress of the iodine‐mediated radical reactions in organic synthesis reported between 2015 and mid‐2024, and organized the reactions according to their mechanistic pathways. In general, the proposed mechanisms can be divided into four categories based on the radical initiation or its preceding steps, namely, (1) formation of a covalent X−I (X=C, N, S, Se) bond, which subsequently participates in a radical reaction; (2) formation of a noncovalent N⋅⋅⋅I bond, which assists the homolysis of the I−I bond; (3) formation of the key iodine radicals by visible‐light or heat induced homolysis of I<sub>2</sub> or by electrochemical oxidation of iodide; (4) iodine induced peroxide decomposition <em>via</em> single electron transfer (SET) mechanism to generate alkoxy or alkyl peroxy radicals. We hope this review will provide readers with a comprehensive update on the iodine‐mediated radical reactions, thereby further inspiring more exciting advances in this emerging field.</div></div>","PeriodicalId":118,"journal":{"name":"Advanced Synthesis & Catalysis","volume":"367 7","pages":"Article e202401486"},"PeriodicalIF":4.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ligand controlled regio‐divergent [2+2+2] cyclotrimerization of alkynes by merging electrochemistry and nickel catalysis
IF 5.4 2区 化学 Q2 CHEMISTRY, APPLIED Pub Date : 2025-04-01 DOI: 10.1002/adsc.202500121
Yueyue Ma, Caixia Liu, Dali Yang, Yi Shen, Xin Wang, Ziqi Fang, Wenhui Huang, Ruihua Cheng, Jinxing Ye
Transition metal catalyzed [2+2+2] cycloaddition reactions between three alkynes, a diyne and an alkyne, or a triyne offer a straightforward and typical protocol toward all kinds of polysubstituted benzens. Herein, the synthesis of polysubstituted aromatics through electrochemical nickel catalyzed cyclotrimerization of alkynes is developed. The regio‐divergent cyclotrimerization of terminal alkynes was achieved by judicious choice of ligands. And tributylphosphine, sterically hindered bipyridine or β‐diketone ligands delivered 1,2,4‐ and 1,3,5‐substituted aromatics with high regioselectivities respectively. Besides, the semi‐intermolecular [2+2+2] cycloaddition between diynes and alkynes are also amenable under this catalytic system. This approach operates without metal reductant, exhibits wide functional groups tolerance, ease of scalability and furnishes 75 examples with moderate to good yields, including some biorelevant compounds. Mechanistic experiments and DFT calculation revealed the catalytic pathways of 1,3,5‐ and 1,2,4‐cyclotrimerizations, and the origin of the ligand controlled regioselectivity.
{"title":"Ligand controlled regio‐divergent [2+2+2] cyclotrimerization of alkynes by merging electrochemistry and nickel catalysis","authors":"Yueyue Ma, Caixia Liu, Dali Yang, Yi Shen, Xin Wang, Ziqi Fang, Wenhui Huang, Ruihua Cheng, Jinxing Ye","doi":"10.1002/adsc.202500121","DOIUrl":"https://doi.org/10.1002/adsc.202500121","url":null,"abstract":"Transition metal catalyzed [2+2+2] cycloaddition reactions between three alkynes, a diyne and an alkyne, or a triyne offer a straightforward and typical protocol toward all kinds of polysubstituted benzens. Herein, the synthesis of polysubstituted aromatics through electrochemical nickel catalyzed cyclotrimerization of alkynes is developed. The regio‐divergent cyclotrimerization of terminal alkynes was achieved by judicious choice of ligands. And tributylphosphine, sterically hindered bipyridine or β‐diketone ligands delivered 1,2,4‐ and 1,3,5‐substituted aromatics with high regioselectivities respectively. Besides, the semi‐intermolecular [2+2+2] cycloaddition between diynes and alkynes are also amenable under this catalytic system. This approach operates without metal reductant, exhibits wide functional groups tolerance, ease of scalability and furnishes 75 examples with moderate to good yields, including some biorelevant compounds. Mechanistic experiments and DFT calculation revealed the catalytic pathways of 1,3,5‐ and 1,2,4‐cyclotrimerizations, and the origin of the ligand controlled regioselectivity.","PeriodicalId":118,"journal":{"name":"Advanced Synthesis & Catalysis","volume":"56 1","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Efficient Cu‐Catalyzed Asymmetric Alkylation and Application in the Total Synthesis of Phallotoxins and Virotoxins 高效铜催化不对称烷基化及其在赘生物毒素和病毒毒素全合成中的应用
IF 4.4 2区 化学 Q2 CHEMISTRY, APPLIED Pub Date : 2025-04-01 DOI: 10.1002/adsc.202401338
Lin Fan , Jiashan Li , Xinlong Yan , Zongwei Li , Yang Wang , Le Pan , Guodu Liu
Asymmetric alkylation is one of the most important methods for synthesis of chiral unnatural α‐substituted α‐amino acids. Herein, we reported the asymmetric alkylation catalyzed by Cu/(4S,2R)‐tBu‐Phosferrox catalyst. This catalyst exhibits the highest catalytic performance in the asymmetric alkylation at catalyst loading as low as 1.0 mol %, giving the desired products with up to 95% yield and >99% ee, which is the best result to date. Furthermore, this method was successfully applied to the scalable practical synthesis of unnatural amino acid 4,5‐OH‐Leu, which could be directly used in the total syntheses of phalloidin, phallacidin, other four phallotoxins and six virotoxins.
不对称烷基化反应是合成手性非天然α-取代α-氨基酸的重要方法之一。本文报道了Cu/(4S,2R)-tBu-Phosferrox催化剂催化的不对称烷基化反应。在负载低至1.0 mol %时,该催化剂在不对称烷基化反应中表现出最高的催化性能,产率高达95%,ee达99%,这是迄今为止最好的结果。此外,该方法还成功应用于非天然氨基酸4,5- oh - leu的规模化实际合成,可直接用于阴茎素、阴茎酸素等4种阴茎素毒素和6种病毒毒素的全合成。
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引用次数: 0
Mechanochemical Pd‐Catalyzed Cross‐Coupling of In‐Situ Generated Reformatsky Zn‐Enolates pd催化原位生成Reformatsky锌烯醇酯的机械化学交叉偶联
IF 4.4 2区 化学 Q2 CHEMISTRY, APPLIED Pub Date : 2025-04-01 DOI: 10.1002/adsc.202401403
Tomáš Čarný , Dominika Mravcová , Barbora Steinhüblová , Radovan Šebesta
Transition‐metal‐catalyzed α‐arylations of carbonyl compounds have shown to be a useful strategy for the late‐stage synthesis of α‐arylesters. However, the use of strong basic conditions and difficult handling necessary for the in‐situ preparation of enolates is a major disadvantage. On the other hand, using Reformatsky zinc‐enolates can overcome these challenges. Moreover, mechanochemical in‐situ activation of zinc is even more beneficial. Herein, we report mechanochemical Pd‐catalyzed cross‐coupling between in‐situ generated Reformatsky Zn‐enolates and aryl halides. This operationally simple procedure affords α‐arylated esters or amides using an affordable catalytic system. Reactions were carried under air and ambient conditions using granulated zinc without the need for its pre‐activation. Less reactive and commercially more affordable aryl bromides afforded the desired products in good to excellent yields in comparison to aryl iodides. The optimized conditions were applied in scale‐up reaction and in the synthesis of α‐arylated esters, amides, and derivatives of natural products.
过渡金属催化羰基化合物的α-芳基化已被证明是α-芳基化合物合成后期的一种有用的策略。然而,原位制备烯醇酯所需的强基础条件和困难的处理是一个主要缺点。另一方面,使用Reformatsky锌烯醇化物可以克服这些挑战。此外,锌的机械化学原位活化更有益。在此,我们报道了原位生成的Reformatsky锌烯醇化物和芳基卤化物之间的机械化学pd催化交叉偶联。这个操作简单的程序提供α-芳基化酯或酰胺使用负担得起的催化系统。反应是在空气和环境条件下进行的,使用粒状锌,不需要它的预活化。与芳基碘化物相比,芳基溴的反应性较低,商业上更实惠,可提供所需产品的良好至优异收率。将优化后的条件应用于放大反应和天然产物α-芳基化酯、酰胺及其衍生物的合成。
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引用次数: 0
Synthesis of 2‐Aminoquinazolines through I2‐Catalyzed Cyclization of 2‐Aminoaryl Ketone Oximes and Isocyanides 2 -氨基芳基酮肟和异氰酸酯环化合成2 -氨基喹唑啉
IF 4.4 2区 化学 Q2 CHEMISTRY, APPLIED Pub Date : 2025-04-01 DOI: 10.1002/adsc.202401463
Huishu Lin , Rongxiuyuan Huang , Xu Wang , Jinping Fu , Yuyuan Liu , Yi Yi , Yingming Pan
An I2/cumene hydroperoxide (CHP)‐mediated tandem cyclization of 2‐aminoaryl ketone oximes with isocyanides has been developed. Various 2‐aminoquinazolines were obtained in 49–96% yields under transition‐metal‐free conditions, and the resulting 4‐phenylquinazolin‐2‐amines show typical fluorescent emission properties. The key to the success of this strategy involves the formation of iminyl radical via the N−O bond cleavage of hydroxy oxime.
研究了一种I2/异氰酸氢过氧化氢(CHP)介导的2 -氨基基酮肟与异氰酸酯的串联环化反应。在无过渡金属的条件下,以49% ~ 96%的收率得到了多种2 -氨基喹唑啉,得到的4 -苯基喹唑啉2 -胺具有典型的荧光发射特性。该策略成功的关键在于通过羟基肟的N - O键裂解形成亚胺基自由基。
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引用次数: 0
Photocatalytic Selective 1,2‐Thiocyanato‐Imination of Alkenes
IF 5.4 2区 化学 Q2 CHEMISTRY, APPLIED Pub Date : 2025-04-01 DOI: 10.1002/adsc.202500277
Yu-Shi Jiang, Shan-Shan Li, Yu Lv, Di-Jing Luo, Lu-Lu Qin, Peng-Ju Xia
A photoinduced energy transfer strategy has been developed for the direct 1,2‐thiocyanato‐imination of alkenes using N‐SCN reagents. The methodology facilitates the synthesis of β‐aminothiocyanates through N‐S bond cleavage, with over 30 examples exhibiting yields up to 88%. Mechanistic studies reveal a radical pathway involving the generation of thiocyanate and iminyl radical species. The resulting β‐aminothiocyanate serves as valuable building blocks for diverse transformations, particularly in the construction of SCN‐containing bioactive molecules with potential pharmaceutical applications.
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引用次数: 0
期刊
Advanced Synthesis & Catalysis
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