One-Pot Synthesis of Quinoline-2(1H)-thiones from 2-Isocyanostyrenes via Electrocyclic Reaction of the Corresponding 2-Isothiocyanatestyrenes - Kobayashi, Kazuhiro; Fujita, Seiki; Fukamachi, Shuhei; Konishi, Hisatoshi (Synthesis, 2009)