Dichloromethane → Foramsulfuron

反応式

[CH3:1][O:2][C:3]1[CH:8]=[C:7]([O:9][CH3:10])[N:6]=[C:5]([NH:11][C:12]([NH:14][S:15]([C:18]2[CH:23]=[C:22]([NH2:24])[CH:21]=[CH:20][C:19]=2[C:25]([N:27]([CH3:29])[CH3:28])=[O:26])(=[O:17])=[O:16])=[O:13])[N:4]=1.ClCCl.[C:33](OC(=O)C)(=[O:35])C>C(O)=O>[CH3:1][O:2][C:3]1[CH:8]=[C:7]([O:9][CH3:10])[N:6]=[C:5]([NH:11][C:12]([NH:14][S:15]([C:18]2[CH:23]=[C:22]([NH:24][CH:33]=[O:35])[CH:21]=[CH:20][C:19]=2[C:25]([N:27]([CH3:29])[CH3:28])=[O:26])(=[O:17])=[O:16])=[O:13])[N:4]=1

参加物

実験手順

A solution of 1.9 g of N-[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]-5-amino-2-dimethylaminocarbonylbenzenesulfonamide and 10 ml of dichloromethane is added dropwise to the mixed anhydride, prepared in situ from 0.5 ml of formic acid and 1.0 ml of acetic anhydride in accordance with standard methods. After the end of reaction, the reaction mixture is concentrated and the residue is washed with water and ethyl acetate, to give 1.8 g of desired product; purity>92% (HPLC).