title: Triethylborane-mediated hydrogallation and hydroindation: novel access to organogalliums and organoindiums.
abstract: Hydrogallation of carbon[bond]carbon multiple bonds proceeds in the presence of triethylborane as a radical initiator. Several functionalities do not interfere with this reaction. Resulting alkenyl- and alkylgallium species can be trapped by several electrophiles. Highly regioselective radical addition of an indium hydride reagent to alkynes is also achieved. Various functionalities are tolerant under the reaction conditions. The reaction proceeds with complete anti stereoselectivity. Alkenylindiums obtained via hydroindation can be employed for the following cross-coupling reaction with aryl halides in one pot.
authors.affiliation: Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 606-8501, Japan.
authors.forename: Kazuaki
authors.initials: K
authors.lastname: Takami
authors.forename: Satoshi
authors.initials: S
authors.lastname: Mikami
authors.forename: Hideki
authors.initials: H
authors.lastname: Yorimitsu
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Shinokubo
authors.forename: Koichiro
authors.initials: K
authors.lastname: Oshima