Regioselective acylation of methyl 2-methyl-4H-thieno [3, 2-b] pyrrole-5-carboxylate

…, IV Zavarzin, AV Ignatenko, MM Krayushkin

Index: Yarovenko; Semenov; Zavarzin; Ignatenko; Krayushkin Russian Chemical Bulletin, 2003 , vol. 52, # 2 p. 451 - 456

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Abstract

Abstract The influence of catalysts, acid chlorides, and solvents on the acylation of methyl 2- methyl-4 H-thieno [3, 2-b] pyrrole-5-carboxylate was studied. The use of AlCl 3 allows the regioselective introduction of the acyl group into position 3 to be performed, whereas the acyl group is regioselectively introduced into position 6 of thienopyrrole when SnCl 4 is used.