We have developed an efficient and simple method for direct transformation of acetals to carboxylic acid esters. The method consists of treatment of acetals with carboxylic anhydrides in the presence of boron trifluoride etherate as a catalyst and affords the corresponding ester derivatives in high yields with retention of configuration in the alcohol moiety. Some mechanistic aspects of this synthetically
我们已经开发出一种有效而简单的方法,可将
乙缩醛直接转化为
羧酸酯。该方法包括在
三氟化硼醚化物作为催化剂存在下用
羧酸酐处理
缩醛,并以高收率得到相应的酯衍
生物,并保留醇部分的构型。还讨论了这种综合有用的转换的一些机制方面。