title: Triethylborane-induced radical reactions with gallium hydride reagent HGaCl2.
abstract: [see reaction]. A gallium hydride reagent, HGaCl2, was found to act as a radical mediator, like tributyltin hydride. Treatment of alkyl halides with the gallium hydride reagent, generated from gallium trichloride and sodium bis(2-methoxyethoxy)aluminum hydride, provided the corresponding reduced products in excellent yields. Radical cyclization of halo acetals was also successful with not only the stoichiometric gallium reagent but also a catalytic amount of gallium trichloride combined with stoichiometric aluminum hydride as a hydride source.
authors.affiliation: Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Mikami
authors.forename: K
authors.initials: K
authors.lastname: Fujita
authors.forename: T
authors.initials: T
authors.lastname: Nakamura
authors.forename: H
authors.initials: H
authors.lastname: Yorimitsu
authors.forename: H
authors.initials: H
authors.lastname: Shinokubo
authors.forename: S
authors.initials: S
authors.lastname: Matsubara
authors.forename: K
authors.initials: K
authors.lastname: Oshima