二溴氰基乙酰胺的合成及其工艺研究

THE RESEARCH ON SYNTHESIS AND TECHNOLOGY OF 2,2-DIBROMO-2-CYANOACETAMIDE

二溴氰基乙酰胺 (DBNPA)是一种新型强效杀菌灭藻剂和水处理剂。通过实验 ,发现了合成它的最佳方法 ,即在H2 O2 的作用下 ,使Br2 与氰基乙酰胺 (CAA)溶液一起加热回流 ,可制备高产率的二溴氰基乙酰胺 ,同时 ,还对合成工艺进行了研究。

Dibromo-2-Cyanoacetamide(or 2,2-dibromo-3-nitrilopionamide DBNPA)[10222-01-2] is a new biocide-algaecide and water treatmant agent. The optimal synthetic method was found in the expriment. DBNPA was prepared. efficiently by reacting CAA with Br 2 in the presence of H 2O 2. The action of H 2O 2 is that the excessive HBr produced in the reaction was transformed into Br 2 which could be recycled. Meanwhile, this paper studied the synthetic technology. The reacting temperature (80～90℃), the reacting time (20～30min), The reacting proportion (CAA:Br 2=1:1.1～1.3) were the optimal reacting conditions.