PROCESS FOR THE PREPARATION OF OXALYL- AND OXAMYL-HYDRAZIDES

摘要

A new process for preparing oxalyl- and oxamyl-hydrazides which comprises contacting oxamide or diacetyloxamide with the corresponding hydrazine derivative of formula R1R2N-NHR3 wherein R1 represents a hydrogen atom or an optionally substituted alkyl, cycloalkyl, aryl, or aryl-alkyl group, R2 is a hydrogen atom or an optionally substituted alkyl group, or R1 and R2 taken together with the adjacent nitrogen atom represent a saturated heterocyclic ring, and R3 is a hydrogen atom or an optionally substituted alkyl group.