Synthesis of nitrogen heterocycles underlain by application of 3-(4-Acetyl[phenyl)-2H-coumarin
作者:O. V. Skripskaya、N. O. Feilo、A. O. Neshchadin、O. V. Elenich、R. Z. Lytvyn、N. D. Obushak、P. I. Yagodinets
DOI:10.1134/s1070428013110158
日期:2013.11
3-(4-Acetylphenyl)-2H-chromen-2-one was obtained from 4-acetylphenyldiazonium chloride in the conditions of Meerwein reaction. Reactions of 3-[4-(2-bromoacetyl)phenyl]-2H-chromen-2-one with pyridine, 4-methylpyridine, quinoline, benzo[f]quinoline, and triphenylphosphine afforded quaternary salts, and with thioacetamide, thiourea, 2-aminopyridine, 2-aminopyrimidine, and 6-aminopurine provided the corresponding derivatives of thiazole, imidazo[1,2-a]pyridine, imidazo[1,2-a]pyrimidine, imidazo[2,1-i]purine. In the reaction of the same bromo derivative with thiosemicarbazide and aromatic aldehydes a thiazole ring is built and the corresponding hydrazones are formed.