Cobalt‐Catalyzed Cross‐Coupling Reaction between Functionalized Primary and Secondary Alkyl Halides and Aliphatic Grignard Reagents
作者:Gérard Cahiez、Christophe Chaboche、Christophe Duplais、Arianna Giulliani、Alban Moyeux
DOI:10.1002/adsc.200800166
日期:2008.7.7
The coupling of primary and secondary unactivated alkyl bromides with alkyl-Grignard reagents was performed in good yields under mild conditions by using a new catalytic system: consisting of cobalt chloride and tetramethylethylenediamine (CoCl2⋅2 LiI, 4 TMEDA). The reaction is very chemoselective since ketone, ester and nitrile functions are tolerated.
由氯化钴和四甲基乙二胺(氯化钴:通过使用新催化体系在温和条件下良好的产率进行初级和次级未活化的烷基溴化物与烷基-格氏试剂的偶联2 ⋅2的LiI,4 TMEDA)。该反应具有很高的化学选择性,因为可以耐受酮,酯和腈的作用。