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

以苯二甲酸酐为原料,经、水、肼、还原步骤合成了3-苯二甲酰肼。

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

以氯苯和苯二甲酸酐为起始原料，经四步工序合成马吲哚，总收率为23．4％。