Copper-Catalyzed Cross-Coupling of Alkyl and Aryl Grignard Reagents with Alkynyl Halides
作者:Gérard Cahiez、Olivier Gager、Julien Buendia
DOI:10.1002/anie.200905816
日期:——
Good old copper! A new general procedure to couple aliphatic and aromatic Grignardreagents with alkynyl halides under copper catalysis is described (see scheme; NMP=N‐methylpyrrolidinone). The reaction is chemoselective and allows preparation of a vast array of simple and functionalized internal alkynes in high yields.
Palladium-Catalyzed Aerobic Oxidative Cross-Coupling Reactions of Terminal Alkynes with Alkylzinc Reagents
作者:Mao Chen、Xiaolong Zheng、Wenqing Li、Jun He、Aiwen Lei
DOI:10.1021/ja100630p
日期:2010.3.31
With air as the oxidant, terminalalkynes can be directly cross-coupled with alkylzinc reagents in the presence of a Pd catalyst at room temperature. CO was found to be critical in gaining high chemical yields and selectivities. A wide range of alkynes and alkylzinc reagents were tested, and good to excellent yields were obtained.
以空气为氧化剂,在室温下,在钯催化剂的存在下,末端炔烃可以与烷基锌试剂直接交叉偶联。发现 CO 对于获得高化学产率和选择性至关重要。测试了范围广泛的炔烃和烷基锌试剂,并获得了良好的收率。