反应详情

2.7 g (15.7 mmol) of 4-aminobenzenesulfonamide and 4.8 g (15.7 mmol) of methyl 4-chloro-2-N-phenoxycarbonylanthranilate were treated in the same way as Preparation Example 1 to obtain 7.9 g (yield 94%) of methyl 2-{[(4-aminobenzenesulfonylamino)carbonyl]amino}-4-chlorobenzoate. Properties: colorless amorphous, PMR (δ ppm, DMSO-d6): 33.59 (3H, s), 5.37 (2H, s), 6.45 (2H, d), 6.83 (1H, dd), 7.41 (2H, d), 7.81,(1H, d), 8.66 (1H, d), 9.64 (1H, s).