Reactions of N, N-(dialkyl) arylthioacetamides with dialkyl acetylenedicarboxylates
MF Kosterina, YY Morzherin, AV Tkachev…
Index: Kosterina, M. F.; Morzherin, Yu. Yu.; Tkachev, A. V.; Rybalova, T. V.; Gatilov, Yu. V.; Bakulev, V. A. Russian Chemical Bulletin, 2002 , vol. 51, # 4 p. 653 - 658 Izvestiya Akademi Nauk, Seriya Khimicheskaya, 2002 , # 4 p. 604 - 608
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Citation Number: 7
Abstract
Abstract 2-(Alkoxycarbonylmethylidene)-4-aryl-5-(dialkylamino) thiophen-3 (2 H)-ones were synthesized by condensation of N, N-(dialkyl) arylthioacetamides with dialkyl acetylenedicarboxylates. Intermediate substituted vinylic sulfides were isolated. When heated or in the presence of an acid or a base, they undergo cyclization into thiophenes.
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