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1. Magnesium Boryl Reactivity with 9‐BBN and Ph3B: Rational B−B′ Bond Formation and Diborane Isomerization

Author

Pécharman, Anne‐Frédérique, Hill, Michael S., McMullin, Claire L., and Mahon, Mary F.

Subjects
Boron Compounds, diborane, Communication, boranes, boryl groups, magnesium, Communications, main-group chemistry
Abstract

Reactions of a magnesium‐based pinacolatoboryl nucleophile with the electrophilic organoboranes, 9‐BBN and Ph3B, provide facile B−B′ single bond formation. Although the Ph3B 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.

Published
2017

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