作者:L. M. Potikha、V. A. Kovtunenko、A. V. Turov
DOI:10.1007/s10593-009-0354-z
日期:2009.7
Treatment of gamma-bromodypnone with arylhydrazines gives differently structured products, i.e. gamma-bromodypnone hydrazones, 1-aryl-3,5-diphenyl-1,4-dihydropyridazines, 1-aryl-3,5-diphenyl-1,6-dihydropyridazines, and aromatic 1,3,5-triarylpyridazinium salts. We have studied the pattern of formation of all of the products and their properties. Heating an alcohol solution of 1,3,5-triphenyl-1,4-dihydropyridazine gives N,2,4-triphenyl-1H-pyrrole-1-amine or to a 1,3,5-triphenylpyridazinium salt dependent upon the acidity of the medium. The product of addition of HBr to the 1,6-dihydropyridazine system is 5-bromo-1-( 4-nitrophenyl)-3,5-diphenyl-1,4,5,6-tetrahydropyridazine.