V. Shvedov, V. Ryzhkova, A. Grinev
1967
Citations
0
Influential Citations
4
Citations
Journal
Chemistry of Heterocyclic Compounds
Abstract
A method for the synthesis of esters of β-thiophenecarboxylic acids and diethyl 3-methyl-2,4-thiophenedicarboxylate by the deamination of derivatives of 2-amino-3-ethoxycarbonylthiophene has been proposed. Ethyl tetrahydrothionaphthene-3-carboxylate has been converted by dehydrogenation on heating with sulfur into ethyl thionaphthene-3-carboxylic acid. The corresponding acids have been obtained by the hydrolysis of the esters. A number of dialkylaminoalkyl esters has been obtained from β-thiophenecarboxylic acids and 3-methyl-2, 4-thiophenedicarboxylic acid via the acid chlorides.