A simple and environmentally friendly method is described for the efficient conversion of alkyl halide to alkyl thiocyanate using tetrabutylammonium bromide (TBAB) as a phase transfer catalyst.The reactions occur in water and furnish the corresponding alkyl thiocyanate in high yields.No evidence for the formation of isothiocyanates as by-product of the reaction was observed and the products were obtained in pure form without further purification. A simple and environmentally friendly method is described for the efficient conversion of alkyl halide to alkyl thiocyanate using tetrabutylammonium bromide (TBAB) as a phase transfer catalyst. These reactions occur in water and furnish the corresponding alkyl thiocyanate in high yield. No evidence for the formation of isothiocyanates as by-product of the reaction was observed and the products were obtained in pure form without further purification.