Abstract The reaction of semicarbazide with quionolacetates gives according to constitution different products such as addition compounds (IVa), phenolic products (Va) or azocarbonamides. The differences in chemical reactivity of 2-methyl-o-quinolacetate and 2, 4-dimethyl-o-quinolacetate remain unexplained. o-Quinondiacetates react with semicarbazide to form o-quinone derivatives (VIIa).
