title: A concerted transfer hydrogenolysis: 1,3,2-diazaphospholene-catalyzed hydrogenation of N=N bond with ammonia-borane.
abstract: 1,3,2-diazaphospholenes catalyze metal-free transfer hydrogenation of a N=N double bond using ammonia-borane under mild reaction conditions, thus allowing access to various hydrazine derivatives. Kinetic and computational studies revealed that the rate-determining step involves simultaneous breakage of the B-H and N-H bonds of ammonia-borane. The reaction is therefore viewed as a concerted type of hydrogenolysis.
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Nanyang Link 21,Singapore 637371 (Singapore).
authors.forename: Che Chang
authors.initials: CC
authors.lastname: Chong
authors.forename: Hajime
authors.initials: H
authors.lastname: Hirao
authors.forename: Rei
authors.initials: R
authors.lastname: Kinjo
keywords: ammonia-borane; azo compunds; hydrogen transfer; main group elements; phosphanes