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1,4-Bis(triphenylphosphonium)-2-butene dichloride(BTPBDC) and 1,4-bis(triphenyl phosphonium)-2-butene dithiocyanate (BTPBDT) were prepared and used as phase-transfer catalysts.Alkyl halides were converted efficiently to the corresponding alkyl thiocyanates under mild reaction conditions in water.No evidence for the formation of isothiocyanates as by-product of the reaction was observed.
1,4-bis (triphenylphosphonium) -2-butene dichloride (BTPBDC) and 1,4-bis (triphenyl phosphonium) -2-butene dithiocyanate (BTPBDT) were prepared and used as phase-transfer catalysts. the corresponding alkyl thiocyanates under mild reaction conditions in water. No evidence for the formation of isothiocyanates as by-product of the reaction was observed.