(S)-2-(4-hydroxy-3-methylcarbamoyloxy-phenyl)-1-methoxycarbonyl-ethyl-ammonium chloride 、
乙醚 在
盐酸 、
乙酰氯 、
乙醚 作用下,
以
溶剂黄146 为溶剂,
反应 2.08h,
以to afford (S)-2-(4-Acetoxy-3-methylcarbamoyloxy-phenyl)-1-methoxycarbonyl-ethyl-ammonium chloride as a solid, 1.55 g的产率得到(S)-2-(4-acetoxy-3-methylcarbamoyloxy-phenyl)-1-methoxycarbonyl-ethyl-ammonium chloride