|
|||||
|
|
Magnesium Boryl Reactivity with 9‐BBN and Ph3B: Rational B−B′ Bond Formation and Diborane Isomerization |
|
| 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 borabicyclo3.3.1]nonane and syn‐diboration of the resultant alkenyl carbocycle. |
| Keywords: | Borane Borylgruppen Diborane Hauptgruppenchemie Magnesium |