Heterocycles from dicarboxylic acids Synthesis of new lactones, succinhydrazides and pyridazine derivative XIII

ABSTRACT

The title compounds were prepared via two different routes. Thus the dicarboxylic acids [I] and [II] previously prepared by the author [1], when treated with bromine in acetic acid, lactones [IIIa, b] were formed through the elimination of hydrogen bromide [2]. The I.R. spectrum of these compounds showed the characteristic absorption bands for lactones and carboxylic acids