title: Copper-Catalyzed Aza-Diels-Alder Reaction and Halogenation: An Approach To Synthesize 7-Halogenated Chromenoquinolines.
abstract: A new halogenation method to construct halogen-substituted quinoline moieties is described. The Cu-catalyzed intramolecular aza-Diels-Alder reaction and halogenation reaction proceeded smoothly under mild conditions to produce the corresponding 7-chloro-6H-chromeno[4,3-b]quinolines and 7-chloro-6H-thiochromeno[4,3-b]quinolines in satisfactory yields.
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology , Dalian 116023, China.
authors.forename: Xiaoqiang
authors.initials: X
authors.lastname: Yu
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology , Dalian 116023, China.
authors.forename: Jiao
authors.initials: J
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology , Dalian 116023, China.
authors.forename: Zhanwei
authors.initials: Z
authors.lastname: Xu
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology , Dalian 116023, China.|WPI-AIMR (WPI-Advanced Institute for Materials Research), Tohoku University , Sendai 980-8577, Japan.
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Yamamoto
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology , Dalian 116023, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Bao