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4-Functionally Substituted 3-heterylpyrazoles: XII. 4-Chlorothieno[2,3-c]pyrazole-5-carbonyl Chlorides
Authors:Bratenko  M K  Chornous  V A  Vovk  M V
Institution:(1) Bukovinskaya State Medical Academy, Chernovtsy, Ukraine
Abstract:3-(4-Pyrazolyl)acrylic acids reacted with excess thionyl chloride in the presence of benzyltriethylammonium chloride affording 4-chlorothieno2,3-c]pyrazole-5-carbonyl chlorides which were converted into the corresponding acids, esters, and amides.
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