Substituted 2-pyrazolines have been prepared by the reaction of chalcones with hydrazines in different media, benzenesulfonyl hydrazide and acyl-hydrazines. The pyrazolines are converted to benzoyl, benzyl derivatives, Mannich bases and to 4-bromopyrazoles. Chalcone dibromide is converted to isoxazole.
E A MOHAMED ,M EL MOBAYED ,A A ISMAIL ,G H SAYED ,
You can use below filter to find your desired issue