Amine-borane dehydrogenation/transfer hydrogenation

The complex (13) reacts with H2 affording a dihydridoboratocobalt dihydride (14) in a reversible manner because of the boron ability to switch between a boryl and a dihydroborate conformation. The complex (14) reacts with HMe2N-BH3 to give a hydridoborane cobalt tetrahydridoborate complex (15), which is examined as the catalyst for olefin hydrogenation as well as amine-borane dehydrogenation/transfer hydrogenation. " " ... 

Dehydrogenation of Amine Borane and Transfer Hydrogenation Using Amine Borane as a Hydrogen Source... 

In extension to the dehydrogenation studies of amine boranes and the transfer hydrogenations of alkenes catalyzed by the Re(I) complexes 16 and 17, highly efficient hydrogenations of alkenes were established based on the co-catalytic systems of 16/Me2NH-BH3 or 17/Lewis acid, which exhibited catalytic activities comparable to those of Wilkinson- or Schrock-Osbom-type hydrogenations accomplished with platinum group metal catalysts [24]. 

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