Methyl 3-amino-2-thiophenecarboxylate → Methyl 3-(3-(dimethylcarbamoyl)phenylsulfonamido)thiophene-2-carboxylate
反応式
[NH2:1][C:2]1[CH:6]=[CH:5][S:4][C:3]=1[C:7]([O:9][CH3:10])=[O:8].[CH3:11][N:12]([CH3:25])[C:13]([C:15]1[CH:16]=[C:17]([S:21](Cl)(=[O:23])=[O:22])[CH:18]=[CH:19][CH:20]=1)=[O:14]>Cl>[CH3:11][N:12]([CH3:25])[C:13]([C:15]1[CH:16]=[C:17]([S:21]([NH:1][C:2]2[CH:6]=[CH:5][S:4][C:3]=2[C:7]([O:9][CH3:10])=[O:8])(=[O:23])=[O:22])[CH:18]=[CH:19][CH:20]=1)=[O:14]参加物
4
実験手順
Methyl 3-aminothiophene-2-carboxylate (93 mg, 0.592 mmol) was dissolved in Py (1.5 ml). 3-(dimethylcarbamoyl)benzene-1-sulfonyl chloride (220 mg, 0.887 mmol) was added, and the reaction was stirred at RT for 3 hrs to achieve completion. The reaction mixture was diluted with HCl 1N and extracted with AcOEt. The organic phase was washed with HCl 1N and brine, dried over Na2SO4 and concentrated under vacuum to give methyl 3-(3-(dimethylcarbamoyl)phenylsulfonamido)thiophene-2-carboxylate (Int. 79, 200 mg, 0.543 mmol).