A simple iodine–DMSO-promoted multicomponent reaction for the synthesis of 2,4-disubstituted dihydrotriazole-3-ones†
Abstract
A series of 2,4-disubstituted 1,2,4-triazole-3-ones 4 were prepared via an iodine–DMSO-promoted three-component reaction of formaldehyde, amines and hydrazines in moderate yields.