PROCESS FOR THE PREPARATION OF TRIAZOLONES

摘要

A process for preparing triazolone compounds of formula (i) comprises heating a mixture of a compound of formula (ii) and a hydrazine derivative of the formula R<5>-NH-NH-CHO, R<5>-NH-NH-C(O)OC(CH3)3 or R<5>-NH-NH-C(O)OCH2C6H5, optionally in the presence of an added base.