A novel and highly selective method is described using triphenylphosphine/diethylazodicarboxylate (DEAD)/NH4SCN for the conversion of alcohols, thiols, carboxylic acids, silyl ethers, and silyl carboxylates to their corresponding thiocyanates.
triphenylphosphine - diethylazodicarboxylate - thiocyanation - alcohol - thiol - carboxylic acid - silyl ether - silyl carboxylate