The objective was to synthesize the bioactive heterocyclic cores via one-pot multicomponent reactions. The book starts with a general introductory section which includes the effectiveness of multicomponent reaction and heterocyclic compounds. In chapter one mono- and di-heteroatom containing heterocyclic compounds like xanthene, dihydropyridopyrimidine have been synthesized from beta-naphthol via multicomponent reaction. The acyclic amidoalkylnaphthol has also been synthesized from the same beta-naphthol. In chapter two, the applications of beta-oxodithioester for synthesis of heterocycles...