Methylene Bisthiocyanate was synthesized by dibromomethane with sodium thiocyanate in ethanol-water using compound R as phase transfer catalyst.

• 以二溴甲烷和硫氰酸钠为原料,乙醇-水为溶剂,化合物R为相转移催化剂合成了二硫氰基甲烷。