1,2-Benzisothiazole-2(3H)-acetamide, N-(5-methyl-3-isoxazolyl)-3-oxo-, 1,1-dioxide → Methyl 2-{[({[(5-methyl-3-isoxazolyl)amino]carbonyl}methyl)amino]sulfonyl}benzoate
反応式
[CH3:1][O-:2].[Na+].[CH3:4][C:5]1[O:9][N:8]=[C:7]([NH:10][C:11](=[O:25])[CH2:12][N:13]2[C:17](=[O:18])[C:16]3[CH:19]=[CH:20][CH:21]=[CH:22][C:15]=3[S:14]2(=[O:24])=[O:23])[CH:6]=1>CN(C=O)C>[CH3:4][C:5]1[O:9][N:8]=[C:7]([NH:10][C:11]([CH2:12][NH:13][S:14]([C:15]2[CH:22]=[CH:21][CH:20]=[CH:19][C:16]=2[C:17]([O:2][CH3:1])=[O:18])(=[O:24])=[O:23])=[O:25])[CH:6]=1参加物
4
実験手順
To 60 ml DMF is added 13.5 grams (0.25 mole) of sodium methoxide. To this slurry at 15°C. is added a solution of 20 grams (0.062 mole) of 2,3-dihydro-N-(5-methyl-3-isoxazolyl)-3-oxo-1,2-benzisothiazole-2-acetamide 1,1-dioxide dissolved in 70 ml DMF. The reaction mixture is stirred at 25°-30°C. for a half hour whereupon it is acidified and extracted with chloroform. These extracts are washed with sodium bicarbonate and water, dried (na2SO4) and concentrated to an oil which is triturated with petroleum ether to give 16.3 grams (75%) of methyl 2-{[({[(5-methyl-3-isoxazolyl)amino]carbonyl}methyl)amino]sulfonyl}benzoate, mp 153°-156°C.