Fe-Catalyzed Direct Synthesis of Nitriles from Carboxylic Acids with Electron-Deficient <i>N</i>-Cyano-<i>N</i>-aryl–arylsulfonamide
作者:Guodong Zhang、Chengyu Zhang、Ye Tian、Feng Chen
DOI:10.1021/acs.orglett.2c04185
日期:2023.2.17
Established carboxylicacids to nitriles conversion methods suffer from expensive catalysts, tedious steps, high temperatures (>200 °C), high pressure, or a narrow substrate range. Herein, we demonstrate a concise and efficient access to diverse nitrile compounds from ubiquitous carboxylicacids with electron-deficient N-cyano-N-aryl–arylsulfonamide (NCAS) in moderate to excellent yields. This strategy
Herein, we demonstrate the synthesis of aliphatic nitriles from N-acyl (2-nitrophenyl)sulfonamides via a desulfonylative Smilesrearrangement. The developed reaction routes provide a variety of aliphatic nitriles containing primary, secondary, and tertiary carbon centers in good-to-excellent yields. Our method requires the use of the easy-to-handle reagent potassium acetate and solvent 1,3-dimethyl-2-imidazolidinone
nitriles from ubiquitous carboxylicacids with N-cyano-N-phenyl-p-toluenesulfonamide. This protocol complements the established carboxylic acids-to-nitriles conversion methods, which suffer from laborious steps, high temperatures (≥200 °C), or limited substrate scopes. This approach operates broadly across diverse aryl, alkenyl, and primary-, secondary-, or tertiary-alkyl carboxylicacids.
开发了一种简洁实用的银催化氮原子转移方案,以使用N -氰基 - N -苯基 - 对甲苯磺酰胺从无处不在的羧酸中获得多功能腈。该协议补充了已建立的羧酸到腈类转化方法,这些方法存在费力的步骤、高温(≥200 °C)或底物范围有限的问题。这种方法广泛适用于各种芳基、烯基和伯、仲或叔烷基羧酸。
Electrophotochemical metal-catalyzed synthesis of alkylnitriles from simple aliphatic carboxylic acids
作者:Yukang Wang、Yan Yao、Niankai Fu
DOI:10.3762/bjoc.20.133
日期:——
report a practical and sustainable electrophotochemical metal-catalyzed protocol for decarboxylative cyanation of simple aliphatic carboxylicacids. This environmentally friendly method features easy availability of substrates, broad functional group compatibility, and directly converts a diverse range of aliphatic carboxylicacids including primary and tertiary alkyl acids into synthetically versatile
抽象的 我们报告了一种实用且可持续的电光化学金属催化简单脂肪族羧酸脱羧氰化方案。这种环境友好的方法具有底物容易获得、官能团兼容性广泛的特点,并且在温和的反应条件下,无需使用化学氧化剂或昂贵的氰化试剂,即可将包括伯烷基酸和叔烷基酸在内的各种脂肪族羧酸直接转化为合成通用的烷基腈。 贝尔斯坦 J. 组织。化学。 2024, 20, 1497–1503。 doi:10.3762/bjoc.20.133
Trityl isocyanide as a general reagent for visible light mediated photoredox-catalyzed cyanations
cyanating reagent. Specifically, a radical-based reaction has provided a mild and convenient procedure for the cyanation of primary, secondary and tertiary radicals derived from widely accessible sp3-hybridized carboxylic acids, alcohols and halides under visible light irradiation. The reaction tolerates a variety of functional groups and it represents a complementary method for the cyanation of structurally