Green synthesis of ethyl oxalate benzylidinyl hydrazides

Abstract

Acylhydrazone compounds play an important role in medicine, materials and other fields. Herein we report the synthesis of ethyl oxalate benzylidinyl hydrazides by the reaction of benzaldehyde derivatives and ethyl oxalate hydrazide under catalyst-free conditions in H2O near room temperature. This green synthesis method has the advantages of mild reaction conditions, fast reaction rate, non-catalytic, good yield and easy isolation. These synthesized ethyl oxalate benzylidinyl hydrazides can be used as Schiff base metal complexes of small molecule ligands.