Esters are among the most important organic compounds since they have variable application in perfume drug and Food industries. There are different synthetic methods for preparation of esters. In this Project we wish to report an efficient and straight forward method for esterification using variouse alkyl halaids and Carboxylate sodium salts in the presence of a catalylic amound of benzyl pyridinium chloride in refluxing acetonitrile. We also report the oxidation of benzylic alcohols to the corresponding carbonyl compounds in refluxing acetonitrile in the presence of catalytic amount of benzyl pyridinium chloride. Solvent-free protection of alcohols also were performed in the presence of catalytic amount of pyridinium chloride to their corresponding benzylic or allylic tetrahydropyranylethers.