title: Facile metal free regioselective transfer hydrogenation of polarized olefins with ammonia borane.
abstract: Transfer hydrogenation of polarized olefins bearing strongly electron-withdrawing groups on one side of the double bond was achieved with ammonia borane under mild conditions without using a catalyst. Mechanistic studies proved the character of the direct H transfers proceeding stepwise with a unique hydroboration intermediate and hydride before proton transfer.
authors.affiliation: Institute of Inorganic Chemistry, University of Zürich, Winterthurerstr. 190, 8057 Zürich, Switzerland.
authors.forename: Xianghua
authors.initials: X
authors.lastname: Yang
authors.forename: Thomas
authors.initials: T
authors.lastname: Fox
authors.forename: Heinz
authors.initials: H
authors.lastname: Berke