[OH:1][C:2]1[C:3]([C:12]([NH:14][NH2:15])=[O:13])=[CH:4][C:5]2[C:10]([CH:11]=1)=[CH:9][CH:8]=[CH:7][CH:6]=2.C([O-])(=O)C.[Na+].C(O)(=O)C.[C:25](Cl)(=[O:32])[C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1>O>[OH:1][C:2]1[C:3]([C:12]([NH:14][NH:15][C:25](=[O:32])[C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=2)=[O:13])=[CH:4][C:5]2[C:10]([CH:11]=1)=[CH:9][CH:8]=[CH:7][CH:6]=2A four neck flask (1 liter) equipped with a thermometer and a stirrer was charged with 60.6 g (0.3 mol) of 3-hydroxy-2-naphthohydrazide, 36.9 g (0.45 mol) of sodium acetate and 800 ml of acetic acid and heated to 30° C. Dropwise added thereto was 50.6 g (0.36 mol) of benzoyl chloride in one hour while stirring, and stirring was continued at 30° C. for one hour. After finishing the reaction, the reaction liquid was added to 1.5 liter of deionized water and crystal was filtered off. After washing sufficiently the crystal with 1 liter of deionized water and 500 ml of methanol, it was dried under reduced pressure to obtain slightly brown crystal.
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