title: 2-Halogenoimidazolium salt catalyzed aza-Diels-Alder reaction through halogen-bond formation.
abstract: 2-Halogenoimidazolium salts are found to catalyze aza-Diels-Alder reaction of aldimines with Danishefsky diene in an efficient manner. Comparative studies and titration experiments support the formation of halogen bonding between imines and catalysts.
authors.affiliation: Frontier Research Base for Global Young Researchers, Graduate School of Engineering and ‡Department of Applied Chemistry, Graduate School of Engineering, Osaka University , Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
authors.forename: Youhei
authors.initials: Y
authors.lastname: Takeda
authors.forename: Daichi
authors.initials: D
authors.lastname: Hisakuni
authors.forename: Chun-Hsuan
authors.initials: CH
authors.lastname: Lin
authors.forename: Satoshi
authors.initials: S
authors.lastname: Minakata