developed. Polymer-supported carbamates react cleanly with zinc bromide and the appropriate acyl halide in the presence of triethylamine to provide their corresponding amides in high yields and purities. Cleavage of resin-bound carbonates was carried out using the similar reagent systems in the absence of triethylamine to give acetates or benzoates.
已经开发了在Merrifield
树脂结合的苄氧羰基当量上制备酰胺和酯的方法。聚合物负载的
氨基甲酸酯在
三乙胺的存在下与
溴化锌和适当的
酰卤发生清洁反应,以高收率和纯度提供其相应的酰胺。在不存在
三乙胺的情况下,使用类似的试剂系统进行
树脂结合的
碳酸酯的裂解,从而得到
乙酸酯或
苯甲酸酯。