In order to create medicinal preparations of some pharmacological action we deemed topical to develop an convenient preparative method for the synthesis of new isomeric qunoxalines. By condensation of 4-chlorophenylenediamine (1) with diphenylethanedione, 6-chloro-2,3-diphenylquinoxaline (2) was synthesized. Quinolinhydrazine (3) was obtained by interaction of the mentioned chlorine products with hydrazine hydrate, and the corresponding 2,3-diphenyl-6-quinoxalinehydrazone was obtained by the action of ethylester of pyruvic acid on the latter. Composition and structure of synthesized compounds is determined by element analysis and physical methods of investigation.
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