Spontaneous trans‐Selective Transfer Hydrogenation of Apolar Boron–Boron Double Bonds. Issue 29 (6th June 2019) - Dömling, Michael
Abstract: 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 μ‐hydrodiboronium dimethylaminoborate ion pair. Abstract : Game of borons : The transfer hydrogenation of apolar cis ‐ and trans ‐diborenes with dimethylamine borane as the hydrogen source proceeds with high selectivity for the corresponding trans ‐1, 2‐dihydrodiboranes. DFT calculations, supported by kinetic data, reveal a new reaction mechanism proceeding via a proton‐first‐hydride‐second pathway through an intermediate μ‐hydrodiboronium aminoborate ion pair.