The reaction of amidoximes with carboxylic acids or their esters under high-pressure conditions

Abstract

3,5-Disubstituted 1,2,4-oxadiazoles were synthesized by the reaction of amidoximes with carboxylic acids or their esters under high-pressure conditions (10 kbar). The reaction proceeds without the use of other reagents or catalysts. Both aliphatic and aromatic carboxylic acids undergo this reaction. The obtained 1,2,4-oxadiazoles possess high fungicidal activity.