A thesis in three parts on Part I Synthesis of 6_benzoyl_4 _methoxy_flavone and 5_benzoyl_4 _methoxy_benzylidene_coumaranone by Kostanecki and Fpuerstein reaction Part II Studies in the Rasoda reaction for the syntheses of flavonols Part III Synthesis of 2_anisoyl_ and 2_benzoyl_3_hydroxy_5_benzoyl_coumarone from the corresponding flavanone and flavone