Journal of heterocyclic chemistry

Synthesis of 3??hetaryl??4, 5, 6, 7??tetrahydrobenzo [b] thiophenes

RW Sabnis, DW Rangnekar

Index: Sabnis, R. W.; Rangnekar, D. W. Journal of Heterocyclic Chemistry, 1992 , vol. 29, # 4 p. 1027 - 1029

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Citation Number: 8

Abstract

Abstract A novel efficient synthesis of 3-hetaryl-4, 5, 6, 7-tetrahydrobenzo [b] thiophenes was achieved by the cyclocondensation of ethyl 2-amino-4, 5, 6, 7-tetrahydrobenzo [6] thiophene- 3-carboxylate with selected o-substituted aromatic amines or with alifatic, aromatic and heterocyclic acid hydrazides in the presence of polyphosphoric acid.