title: N-heterocyclic carbene-catalyzed double acylation of enones with benzils.
abstract: Thiazolium carbene-catalyzed reaction of aromatic 1,2-diketones with enones in aprotic solvents gave double acylation products in good yields, whereas hydroacylation products formed by Stetter reaction were not detected at all. These results suggested the generation of aroyloxyenamine species from the 1,2-diketones instead of hydroxyenamines (Breslow intermediates).
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Kagamiyama, Higashi-Hiroshima 739-8527, Japan. ktakaki@hiroshima-u.ac.jp.
authors.forename: Ken
authors.initials: K
authors.lastname: Takaki
authors.forename: Akira
authors.initials: A
authors.lastname: Ohno
authors.forename: Makoto
authors.initials: M
authors.lastname: Hino
authors.forename: Takashi
authors.initials: T
authors.lastname: Shitaoka
authors.forename: Kimihiro
authors.initials: K
authors.lastname: Komeyama
authors.forename: Hiroto
authors.initials: H
authors.lastname: Yoshida