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Note | Regular issue | Vol 71, No. 3, 2007, pp.691-697
Published online, 15th January, 2007
DOI: 10.3987/COM-06-10963
■ Synthesis of 4,5-Diaminopyrrolo[1,2-a]quinoline Derivatives by a Lewis Acid Catalyzed Reaction of 2-(Pyrrol-1-yl)benzaldimines with Isocyanides

Kazuhiro Kobayashi,* Yasutoshi Himei, Yuichi Izumi, Shuhei Fukamachi, Osamu Morikawa, and Hisatoshi Konishi

*Department of Materials Science, Faculty of Engineering, Tottori University, 4-101 Koyama-minami, Tottori 680-8552, Japan

Abstract

N-Alkyl(or aryl)-2-(pyrrol-1-yl)benzaldimines, derived from 2-(pyrrol-1-yl)benzaldehydes and primary amines, were treated with aromatic and aliphatic isocyanides in the presence of a catalytic amount of boron trifluoride diethyl etherate to afford the corresponding 4,5-diaminopyrrolo[1,2-a]quinoline derivatives in generally fair to good yields.