Synthesis and Transformations of 3-Ethoxycarbonyl-2-(NR-thioureido) thiophenes

LY Chumakova, AM Demchenko, AN Krasovsky…

Index: Chumakova; Demchenko; Krasovsky; Dolishnyak; Lozinskii Chemistry of Heterocyclic Compounds, 2003 , vol. 39, # 8 p. 1002 - 1012

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Abstract

Abstract 3-Ethoxycarbonyl-2-(NR-thioureido)-4, 5, 6, 7-tetrahydrobenzo [b] thiophenes were obtained by the reaction of 2-amino-3-ethoxycarbonyl-4, 5, 6, 7-tetrahydrobenzo [b] thiophene with isothiocyanates and of 3-ethoxycarbonyl-2-isothiocyanato-4, 5, 6, 7- tetrahydrobenzo [b] thiophene with primary and secondary amines. The cyclization paths of the products leading to derivatives of thieno [2, 3-d] pyrimidine and thieno [2, 3-d]-1, 3- ...

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