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

以甲酸酐为原,化、脱水、肼化、还原步骤合成了3-氨基甲酰肼。

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

以氯和甲酸酐为起始原，四步工序合成马吲哚，总收率为23．4％。