title: Chiral N-heterocyclic carbene/Lewis acid cooperative catalysis of the reaction of 2-aroylvinylcinnamaldehydes: a switch of the reaction pathway by Lewis acid activation.
abstract: The chiral N-heterocyclic carbene/Lewis acid co-catalyzed reaction of 2-aroylvinylcinnamaldehydes produced good yields of indeno[1,2-c]furan-1-one derivatives with excellent enantioselectivity and diastereoselectivity. A switch of intramolecular cyclization to intermolecular dimerization was achieved by the cooperative catalysis of chiral triazole carbene and Ti(OPr-i)4 catalysts.
authors.affiliation: College of Chemistry, Beijing Normal University, Beijing, 100875, China. ycheng2@bnu.edu.cn.
authors.forename: Zhan-Yong
authors.initials: ZY
authors.lastname: Wang
authors.affiliation: College of Chemistry, Beijing Normal University, Beijing, 100875, China. ycheng2@bnu.edu.cn.
authors.forename: Ya-Li
authors.initials: YL
authors.lastname: Ding
authors.affiliation: College of Chemistry, Beijing Normal University, Beijing, 100875, China. ycheng2@bnu.edu.cn.
authors.forename: Gang
authors.initials: G
authors.lastname: Wang
authors.affiliation: College of Chemistry, Beijing Normal University, Beijing, 100875, China. ycheng2@bnu.edu.cn.
authors.forename: Ying
authors.initials: Y
authors.lastname: Cheng