Dehydrocoupling of boranes with amines using a scandium catalyst  

作　　者：Yang Wang Pengfei Xu Xin Xu 

机构地区：[1]Key Laboratory of Organic Synthesis of Jiangsu Province,College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou 215123,China

出　　处：《Chinese Chemical Letters》2021年第12期4002-4005,共4页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No. 21871204)。

摘　　要：The scandocene alkyl complex(C_(5)Me_(5))_(2)ScCH_(2)SiMe_(3)was found to be an efficient catalyst for the dehydrocoupling of the non-cyclic boranes, dicyclohexylborane and thexylborane, with amines under mild conditions. The reactions afforded the corresponding aminoboranes in high yields with good functional group tolerance. The stoichiometric reaction of scandium alkyl with amine led to the isolation of a scandium amide complex, which was shown to be an active species during the catalysis. Although a boranecoordinated scandium hydride was also obtained from the stoichiometric experiment, it was not involved in the catalytic cycle. In addition, kinetic studies provided insight into this intermolecular dehydrogenation reaction.

关 键 词：BORANE Aminoborane DEHYDROCOUPLING SCANDIUM β-H elimination 

分 类 号：O621.251[理学—有机化学]