Prototropic isomerization of trans-4-benzamido-3-hydroxy-2-(4-carbomethoxybutylidene)thiophan to cis- and trans-4-benza mido-3-oxo-2-(4-carbomethoxybutyl) thiophan |
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| Authors: | S D Mikhno T N Polyanskaya V M Berezovskii |
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| Institution: | (1) All-Union Scientific-Research Vitamin Institute, Moscow |
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| Abstract: | trans-4-Benzamido-3-hydroxy-2-(4-carbomethoxybutylidene)thiophan (I) was prototropically isomerized in the presence of hydrogen chloride. It is shown that the two possible isomers cis- and trans-4-benzamido-3-oxo-2-(4-carbomethoxybutyl)thiophan — are formed in the process.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No, 2, pp. 175–177, February, 1973. |
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