The n butyl gallate was synthesized by esterification of butyl alcohol and gallic acid in catalysis of p methyl toluenesulfonic acid (PTSA) induced by microwaves.

• 采用微波辐射技术，以对甲苯磺酸（PTSA）作催化剂，没食子酸和正丁醇直接酯化合成没食子酸正丁酯。