title: Chelate-assisted direct selenation of aryl C-H bonds with diselenides catalyzed by palladium.
abstract: A direct selenation of inert C-H bonds of benzamide derivatives and their related compounds with diselenides has been achieved with the palladium catalyst. The reaction was compatible with a variety of functional groups, including a bromo group. Primitive mechanistic insights revealed that the reaction proceeded through a C-H bond cleavage and the sequential oxidative addition of diselenides. The present synthetic method can be applied to the facile synthesis of selenoxanthone which can be regarded as promising heterocyclic materials.
authors.affiliation: Division of Earth, Life, and Molecular Sciences, Graduate School of Natural Science and Technology, Okayama University , 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan.
authors.forename: Masayuki
authors.initials: M
authors.lastname: Iwasaki
authors.forename: Yuta
authors.initials: Y
authors.lastname: Tsuchiya
authors.forename: Kiyohiko
authors.initials: K
authors.lastname: Nakajima
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Nishihara