[C:1]([NH:4][C:5]1[CH:14]=[CH:13][CH:12]=[C:11]2[C:6]=1[CH:7]=[CH:8][C:9]([S:19](Cl)(=[O:21])=[O:20])=[C:10]2[O:15]C(=O)C)(=[O:3])[CH3:2].C(Cl)(Cl)Cl.C(=O)([O-])[O-].[NH4+:31].[NH4+].Cl>O>[C:1]([NH:4][C:5]1[CH:14]=[CH:13][CH:12]=[C:11]2[C:6]=1[CH:7]=[CH:8][C:9]([S:19]([NH2:31])(=[O:21])=[O:20])=[C:10]2[OH:15])(=[O:3])[CH3:2]The 5-acetamido-1-hydroxynaphthalene-2-sulfonamide was prepared by dissolving 10.8 g. of 5-acetamido-1-acetoxynaphthalene-2-sulfonyl chloride in 10 ml. dry chloroform and heating on the steam bath with 25.0 g. anhydrous ammonium carbonate for 2.5 hours. The yellow-brown solid was dissolved by heating with 50 ml. water on the steam bath for 4 hours. Acidification with dilute hydrochloric acid to pH 5 caused the sulfonamide to precipitate. It was filtered off, washed and dried, yielding 5.61 g. (63%).
読み込み中…
