One-pot synthesis of quinoline-2 (1H)-thiones from 2-isocyanostyrenes via electrocyclic reaction of the corresponding 2-isothiocyanatestyrenes
K Kobayashi, S Fujita, S Fukamachi, H Konishi
Index: Kobayashi, Kazuhiro; Fujita, Seiki; Fukamachi, Shuhei; Konishi, Hisatoshi Synthesis, 2009 , # 20 p. 3378 - 3382
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Citation Number: 15
Abstract
Abstract The reaction of α-substituted 2-isocyanostyrenes, which could be readily prepared from commercially available 2-aminophenyl ketones or 2-aminobenzonitriles, with sulfur in the presence of a catalytic amount of selenium proceeded smoothly to give the corresponding 2-isothiocyanatestyrenes. The latter spontaneously underwent the electrocyclic reaction to afford 4-substituted quinoline-2 (1H)-thiones in one-pot with ...
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