Firstly, p-methylacetophenone was obtained in the presence of alchlor as the catalyst, and the optimum condition was 4:1:2 in molar ratio for toluene, acetic anhydride and alchlor with yield of 86.2%.

首，以甲和酐为原料，在催剂三氯铝存在下合成对甲基酮，并确定甲，酐和三氯铝的最佳摩尔比为4: 1: 2，收率为86.2%。