Reduction of some esters of pyrazole-3,4-dicarboxylic acid
Abstract
3,4-Bishydroxymethylpyrazole was prepared by reduction of diethyl pyrazole-3,4-dicarboxylate and of SS-diethyl pyrazole-3,4-dicarbothioate. A reduction of dimethyl pyrazole-3,4-dicarboxylate to methyl 4-formylpyrazole-3-carboxylate is also described.