Copper-mediated C–H cyanation of (hetero)arenes with ethyl (ethoxymethylene)cyanoacetate as a cyanating agent
作者:Chaorong Qi、Xiaohan Hu、Huanfeng Jiang
DOI:10.1039/c7cc03384b
日期:——
A copper-mediated direct C–H cyanation reaction of (hetero)arenes with ethyl (ethoxymethylene)cyanoacetate as a safe cyanating agent has been developed.
Copper-catalyzed cyanation of arenes using benzyl nitrile as a cyanide anion surrogate
作者:Jisong Jin、Qiaodong Wen、Ping Lu、Yanguang Wang
DOI:10.1039/c2cc35046g
日期:——
The copper-catalyzedcyanation of arenes using benzyl nitrile as a cyanide anion surrogate furnishes aromatic nitriles in moderate to good yields. The cascade process involves a copper-catalyzed aerobic C-Hoxidation, a retro-cyanohydrination, and a copper-catalyzed aerobic oxidativeC-H functionalization.
A nickel-catalyzed C–H cyanation reaction of arenes has been developed using 2-cyanoisothiazolidine 1,1-dioxide as an electrophilic cyanation reagent. Many different directing groups can be used in this cyanation to obtain a series of cyanation products with good yields. Adopting this strategy to introduce a cyano group, natural alkaloid menisporphine was successfully synthesized through cyano group
Rhodium(<scp>iii</scp>)-catalyzed aromatic C–H cyanation with dimethylmalononitrile as a cyanating agent
作者:He Li、Sheng Zhang、Xiaoqiang Yu、Xiujuan Feng、Yoshinori Yamamoto、Ming Bao
DOI:10.1039/c8cc08930b
日期:——
A rhodium-catalyzed aromatic C–H bond direct cyanation with safe, bench-stable, and commercially available dimethylmalononitrile as the cyanating agent has been successfully developed by using copper oxide as a promotor. Pyridine, quinoline, pyrimidine and pyrazole were used as the directing group in this type of C–H bond direct cyanation reaction.