Process method for preparing 5, 6-dimethoxy-1, 2-indanedione

The invention discloses a process method for preparing 5, 6-dimethoxy-1, 2-indandione, which comprises the following step: reacting veratrole as a raw material with a hydroxypyruvic acid compound under the action of a catalyst to obtain the 5, 6-dimethoxy-1, 2-indandione. The method has the advantages of short route, short reaction time, simple operation and high yield. 本发明公开了一种制备5,6-二甲氧基-1,2-茚二酮的工艺方法，包括以下步骤：以邻苯二甲醚为原料，与羟基丙酮酸类化合物，在催化剂作用下反应，得到5,6-二甲氧基-1,2-茚二酮。其路线短，反应时间短，操作简单，收率高。