Guanylhydrazones of (hetero)aryl methyl ketones: Structure and reaction with acetic anhydride

Abstract

The synthesis of some novel guanylhydrazones of (hetero)aryl methyl ketones is described. Successive reaction with hot acetic anhydride leads to the corresponding N,N′-diacetyl derivatives. Structural assignments of all novel compounds and those of some already known congeners were achieved by means of NMR spectroscopic investigations (1H, 13C) and X-ray structure analysis.