It can also be prepared by reaction of bromochloromethane with sodium thiocyanate to obtain chloromethyl thiocyanate, and then it reacts with 2-mercapto-benzothiazole.

另一种2-巯基苯并法是先将溴氯甲与硫氰化钠反硫氰酸氯甲酯，然后硫氰酸氯甲酯与2-巯基苯并反得到苯氰。