Spontaneous trans-Selective Transfer Hydrogenation of Apolar B=B Double Bonds.

Michael Dömling,Merle Arrowsmith,Uwe Schmidt,Luis Werner,Abril Castro,J Oscar C Jimenez-Halla,Jonas Müssig,Dominic Prieschl,Holger Braunschweig

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION（2019）

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摘要

The transfer hydrogenation of N-heterocyclic carbene (NHC)-supported diborenes with dimethylamine borane proceeds with high selectivity for the trans-1,2-dihydrodiboranes. DFT calculations, supported by kinetic studies and deuteration experiments, suggest a stepwise proton-first-hydride- second reaction mechanism via an intermediate m-hydrodiboronium dimethylaminoborate ion pair.

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关键词

amine borane dehydrocoupling,DFT mechanism,diboranes,diborene,transfer hydrogenation

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