title: Anomalous reactivity of silylborane: transition-metal-free boryl substitution of aryl, alkenyl, and alkyl halides with silylborane/alkoxy base systems.
abstract: An unexpected borylation of organic halides with a silyborane in the presence of an alkoxy base has been observed. This formal nucleophilic boryl substitution can be applied to a broad range of substrates with high functional group compatibility. Even sterically hindered aryl bromides afforded the corresponding boryl compounds in high yields. Preliminary mechanistic studies indicated that this boryl substitution is promoted by neither transition-metal contamination nor a radical-mediated process.
authors.affiliation: Division of Chemical Process Engineering and Frontier Chemistry Center, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan.
authors.forename: Eiji
authors.initials: E
authors.lastname: Yamamoto
authors.forename: Kiyotaka
authors.initials: K
authors.lastname: Izumi
authors.forename: Yuko
authors.initials: Y
authors.lastname: Horita
authors.forename: Hajime
authors.initials: H
authors.lastname: Ito