Using 2-acetyl benzimidazole and sodium bromide as raw material,2-(dibromine acetyl)-benzimidazole hydrobromate was synthesized with the new bromine that displaced by chlorine gas in light.

以2-乙酰基苯并化钠为原料,在光照条件用氯气置换出化钠中的,成兽药噻苯中间体-2-(二乙酰基)-苯并氢酸盐。