Transfer of alk-1-enyl group from boron to boron: preparation of B-[(E)-alk-1-enyl]-9-borabicyclo[3.3.1]nonane
Abstract
Treatment of (E)-alk-1-enyldicyclohexylborane 1 with B-methoxy-9-borabicyclo[3.3.1]nonane (B-MeO-9-BBN) at 0 °C results in transfer of alk-1-enyl group from boron to boron to give B-[(E)-alk-1-enyl]-9-BBN 2 with retention of configuration.