Synthesis of 1-substituted 5-aryl-3-styryl-2-pyrazolines and 3-aryl-5-styryl-2-pyrazolines by the reaction of dibenzylideneacetones and<i>E,E</i>-cinnamylideneacetophenones with hydrazines
作者:Albert Lévai、József Jekó
DOI:10.1002/jhet.5570430524
日期:2006.9
The reaction of dibenzylideneacetones or E,E-cinnamylidene- acetophenones and hydrazine hydrate provided 1-propionyl derivatives of 5-aryl-3-styryl-2-pyrazolines and 3-aryl-5-styryl-2-pyrazolines. These unsaturated ketones afforded 1-(2-carboxyphenyl) or 1-(4-carboxyphenyl) 5-aryl-3-styryl-2-pyrazolines and 1-(4-carboxyphenyl) derivatives of 3-aryl-5-styryl-2-pyrazolines on treatment with (2-carboxyphenyl)-hydrazine