Synthesis of 3-Substituted Phenyl-4-Arylidene-5- [(2´ -O-Carbamy) 5´ /6´ -Methyl Phenyl] Pyrazoles

Abstract

The synthesis of some new 3-substituted phenyl-4-arylidine-5-[(2´-o- carbamyl) 5´/6´-methyl phenyl] pyrazoles have been reported. The strategy employed for the synthesis involved the reaction of 2´-hydroxy, 5´/6´-methyl- 2-benzoyl-3-aryl-acrylophenones with hydrazine hydrate to give targeted pyrazoles II_a-m. The structures of these compounds have been confirmed by elemental analysis and ir, nmr spectral studies.