反应详情

A process for preparing thienylglyoxylic acid which comprises reacting thiophene carboxylic acid chloride with aqueous sodium cyanide in methylene chloride solvent and in the presence of a phase transfer catalyst to form thiophene carboxylic acid cyanide and then reacting said thiophene carboxylic acid cyanide with concentrated hydrochloric acid at a temperature and for a time sufficient to form thienylglyoxylic acid.