Reduction of a dihydroboryl cation to a boryl anion and its air-stable, neutral hydroboryl radical through hydrogen shuttling†,Chemical Science

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Reduction of a dihydroboryl cation to a boryl anion and its air-stable, neutral hydroboryl radical through hydrogen shuttling†
Chemical Science ( IF 9.969 ) Pub Date : 2023-02-15 , DOI: 10.1039/c9sc05026d
Stephan Hagspiel, Merle Arrowsmith, Felipe Fantuzzi, Alexander Hermann, Valerie Paprocki, Regina Drescher, Ivo Krummenacher, Holger Braunschweig

The addition of Lewis bases to a cyclic (alkyl)(amino)carbene (CAAC)-supported dihydroboron triflate yields the mixed doubly base-stabilised dihydroboryl cations [(CAAC)BH₂L]⁺. Of these, [(CAAC)₂BH₂]OTf (OTf = triflate) underwent facile two-electron reduction with KC₈ owing to a 1,2-hydride migration from boron to the carbene carbon to yield a stable hydroboryl anion. One-electron oxidation of the latter yielded the first neutral hydroboryl radical, which is bench-stable in the solid state.

更新日期：2020-01-02

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