Two series of 2, 4, 6-triphenylverdazyls substituted at the C (3) position of the heterocyclic ring are obtained using new convenient synthetic methodology. Thus, crown ether assisted solid-liquid phase-transfer catalysis promotes the formation of 3-n-alkyl-substituted 2, 4, 6- triphenylverdazyls in the reactions of 1, 3, 5-triphenylformazan with n-alkyl bromides. Under PTC conditions, methylation of 3-(4-nitrophenyl)-1, 5-diphenylformazan with methyl iodide ...
