Preparation method of N-cyclohexyl-2-benzothiazolesulfenamide

The invention belongs to the technical field of fine chemical engineering, and concretely relates to an oxidant-free preparation method of N-cyclohexyl-2-benzothiazolesulfenamide (CBS). The CBS is synthesized from benzothiazole disulfide (a sulfuration promoter DM) and cyclohexylamine by using an inorganic or organic alkaline catalyst, no oxidant is needed in the reaction process, the added catalyst can be repeatedly used, and the addition amount of the catalyst is 5-30% of the weight of benzothiazole disulfide. The yield of the CBS product synthesized through the method stabilizes in a range of 98-99.5, methanol insoluble substances in the product are stable, the lowest content of the methanol insoluble substances is 0.1%, and the highest content of the methanol insoluble substances is 0.22%, and no wastewater is generated in the process, so the method is suitable for industrial production.