A method for preparing an ester having the structure ##STR1## in which A is an acid residue; R, same or different is H, lower alkyl, aryl, or in which both R together form a ring structure and R' is H, lower alkyl or aryl. The method comprises combining a first compound having the structure ##STR2## and a second compound which is an acyl halide corresponding to A, said combining being performed in the presence of an organic acid.
一种制备具有结构##STR1##的酯的方法,其中A是酸残基;R,相同或不同的是H,低烷基,芳基,或其中R共同形成环结构,而R'是H,低烷基或芳基。该方法包括将具有结构##STR2##的第一化合物与对应于A的
酰卤化物的第二化合物在有机酸的存在下进行组合。