[C:1]([C:4]1[CH:5]=[C:6]([NH:10][S:11]([C:14]2[CH:19]=[CH:18][C:17]([CH3:20])=[CH:16][CH:15]=2)(=[O:13])=[O:12])[CH:7]=[CH:8][CH:9]=1)(=[O:3])[CH3:2].C[O-].[Na+].[CH2:24](I)[CH3:25]>CN(C)C=O>[C:1]([C:4]1[CH:5]=[C:6]([N:10]([CH2:24][CH3:25])[S:11]([C:14]2[CH:15]=[CH:16][C:17]([CH3:20])=[CH:18][CH:19]=2)(=[O:13])=[O:12])[CH:7]=[CH:8][CH:9]=1)(=[O:3])[CH3:2]A 29 g portion of N-(3-acetylphenyl)-4-methylbenzenesulfonamide was dissolved in 250 ml of dimethylformamide with stirring. This mixture was treated with 6.5 g of sodium methoxide and stirred for 30 minutes, then 20 g of ethyl iodide was added. This mixture was stirred at room temperature for one hour, then at reflux for 5 hours. The dimethylformamide was removed in vacuo, the residue shaken with 150 ml of water, the mixture adjusted to pH 4 with 10N sodium hydroxide and then cooled to 0° C. The precipitate was collected, washed twice with water and then air dried, giving 31.5 g of N-(3-acetylphenyl)-N-ethyl-4-methylbenzenesulfonamide.
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