Cobalt-catalyzed ammonia borane dehydrocoupling and transfer hydrogenation under aerobic conditions

Two cobalt compounds, Cp*Co(CO)I-2 (1) and CpCo(CO)I-2 (2) (Cp* = eta(5)-C5Me5, Cp = eta(5)-C5H5), catalyze the dehydrogenation of ammonia borane under either anaerobic or aerobic conditions and are also effective hydrogenation catalysts for alkenes and alkynes using ammonia borane as a hydrogen source, also in the presence of air.