Preparation of Optically Enriched 3??Hydroxy??3, 4??dihydroquinolin??2 (1H)??ones by Heterogeneous Catalytic Cascade Reaction over Supported Platinum Catalyst

G Szőllősi, Z Makra, L Kovacs…

Index: Szollosi, Gyoergy; Makra, Zsolt; Kovacs, Lenke; Fueloep, Ferenc; Bartok, Mihaly Advanced Synthesis and Catalysis, 2013 , vol. 355, # 8 p. 1623 - 1629

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Citation Number: 12

Abstract

Abstract The development of a novel heterogeneous catalytic asymmetric cascade reaction for the synthesis of tetrahydroquinolines from 2-nitrophenylpyruvates is reported. Optically enriched 3-hydroxy-3, 4-dihydroquinolin-2 (1H)-ones are prepared by enantioselective hydrogenation of the activated keto group over a Cinchona alkaloid-modified Pt catalyst, reduction of the nitro group and spontaneous cyclization cascade. Acceleration of the ...