Copper-catalyzed synthesis of α-amino nitriles through methyl transfer from DMF to aromatic amines
作者:Zaifeng Yuan、Na Li、Chunyu Zhu、Chengfeng Xia
DOI:10.1039/c8cc00485d
日期:——
A copper-catalyzed activation of C(sp3)–H bonds of DMF at room temperature was developed, which results in methyl transfer to aromatic amines for efficient synthesis of exceedingly valuable α-amino nitriles. This process features excellent functional group tolerance, a broad substrate scope, and high activity under ambient conditions.
Cyanoacetic Acid as a Masked Electrophile: Transition-Metal-Free Cyanomethylation of Amines and Carboxylic Acids
作者:Hongxiang Wang、Ying Shao、Hao Zheng、Hanghang Wang、Jiang Cheng、Xiaobing Wan
DOI:10.1002/chem.201502733
日期:2015.12.7
Using cyanoaceticacid as a maskedelectrophile, a new cyanomethylation reaction of amines and carboxylicacids was developed, producing a variety of α‐aminonitriles and cyanomethyl esters with good yields and excellent functionality tolerance. This protocol features simple manipulation, inexpensive reagents, and a wide substrate scope. Iodoacetonitrile was generated in situ from the iodination–decarboxylation
Iron-catalysed carbene-transfer reactions of diazo acetonitrile
作者:Claire Empel、Katharina J. Hock、Rene M. Koenigs
DOI:10.1039/c8ob01991f
日期:——
A continuous-flow protocol for the synthesis of diazo acetonitrile was developed. It was further applied in iron-catalysed insertion reactions of diazo acetonitrile into N–H and S–H bonds to yield valuable α-substituted acetonitrile, including gram-scale synthesis.
Metal-Free Aerobic Oxidative Cyanation of Tertiary Amines: Azobis(isobutyronitrile) (AIBN) as a Sole Cyanide Source
作者:Peng-Yu Liu、Chao Zhang、Shi-Chen Zhao、Fang Yu、Fei Li、Yu-Peng He
DOI:10.1021/acs.joc.7b02021
日期:2017.12.1
An aerobicoxidative cyanation for the synthesis of α-aminonitriles was reported. The formation of C(sp3)-CN bonds was achieved under a metal-free condition by utilizing azobis(isobutyronitrile) as a sole organic cyanide source with the combination of pivalic acid and sodium acetate as additives.