The synthesis and structure of 1,1,1-trimethylhydrazinium 3-methoxycarbonyl-pyrazole-5-carboxylate, a typical novel intermediate for acid-ester synthesis
Abstract
1,1-Dimethylhydrazine was observed to monodemethylate a dimethyl ester at room temperature to give a 1,1,1-trimethylhydrazinium-ester (II), whose subsequent treatment with acid gave an acid-ester (III); a single crystal X-ray analysis of (II) was carried out.