[CH3:1][C:2]1[CH:8]=[C:7]([CH3:9])[CH:6]=[C:5]([CH3:10])[C:3]=1[NH2:4].C(N(CC)CC)C.[C:18]1([S:24]([NH:27][C:28]2[CH:32]=[CH:31][S:30][C:29]=2[C:33](Cl)=[O:34])(=[O:26])=[O:25])[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1.CCCCCC.C(OCC)(=O)C>ClCCl>[CH3:1][C:2]1[CH:8]=[C:7]([CH3:9])[CH:6]=[C:5]([CH3:10])[C:3]=1[NH:4][C:33]([C:29]1[S:30][CH:31]=[CH:32][C:28]=1[NH:27][S:24]([C:18]1[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=1)(=[O:25])=[O:26])=[O:34]To a solution of 2,4,6-trimethylaniline (70 mg, 0.518 mmol) in dichloromethane (0.20 mL) and triethylamine (72 □L, 0.52 mmol) was added 3-benzenesulfonylamino-thiophene-2-carboxylic acid chloride (134 mg, 0.444 mmol). The resulting mixture was allowed to stir overnight at room temperature under a nitrogen atmosphere. The reaction mixture was applied directly to silica gel, (9:1 hexane/ethyl acetate, gradient to 4:1 hexane ethyl acetate). The compound was then precipitated from hexanes and dichloromethane to give 3-benzenesulfonylamino-thiophene-2-carboxylic acid (2,4,6-trimethylphenyl) amide as a white solid (0.028 g, 16%).
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