Amino phthalhydrazide was synthesized from phthalic anhydride by four steps of nitrationidehydration, hydrazinolysis and reduction reactions in this paper.

以邻苯二甲酸酐为原料,经硝、脱水、、原步了3-氨基邻苯二甲酰。

Mazindol was synthesized by four steps from chlorobenzene and phthalic anhydride in an overall yield of 23.4%.

以氯苯和邻苯二甲酸酐为起始原料，经四步工序马吲哚，总收率为23．4％。