Magnesium Boryl Reactivity with 9-BBN and Ph₃ B: Rational B-B' Bond Formation and Diborane Isomerization.

ABSTRACT: Reactions of a magnesium-based pinacolatoboryl nucleophile with the electrophilic organoboranes, 9-BBN and Ph₃ B, provide facile B-B' single bond formation. Although the Ph₃ B derivative is thermally stable, when heated, the unsymmetrical diborane(5) anion derived from 9-BBN is found to isomerize to two regioisomeric species via a proposed mechanism involving dehydroboration of the borabicyclo[3.3.1]nonane and syn-diboration of the resultant alkenyl carbocycle.

SUBMITTER: Pecharman AF 

PROVIDER: S-EPMC5767756 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature