A New Look at Boron Enolate Chemistry:  Aminative C−C Bond Formation Using Diaminoboron Enolate with Aldehyde

Unlike ordinary boron enolates, such as dialkylboryl (R₂B) and dialkoxyboryl ((RO)₂B) derivatives, reactions of diaminoboryl ((R₂N)₂B) enolates with aldehydes proceed with the concurrent transfer of amino and enoxy groups from the boron to the aldehyde carbon, yielding β-amino ketones in a selective manner.