When bromo compounds not having beta phenyl group (2h-2j) gives unsymmetrical trithiocarbonate salt (3h-3j). Under this condition, it is observed that nitrile (4d) was hydrolyzed to amide and the methyl ester (4f) was saponified to corresponding acid. (table-1). ). This method is superior for synthesis of disulfide in odor free environment, over its preparation from sulfide, halides, and metal sulfur. The PTC method as well as heating (80 o C) method are superior for thiol synthesis over reported methods from halide and in particular from thiourea under basic condition, and by reacting alcohol with Lawesson's reagent .