[CH:1]1[C:6]([OH:7])=[CH:5][CH:4]=[C:3]([CH3:8])[CH:2]=1.[OH-].[Na+].O.[C:12]1([CH3:24])[CH:17]=[C:16]([CH3:18])[CH:15]=[C:14]([CH3:19])[C:13]=1[S:20](Cl)(=[O:22])=[O:21]>C1(C)C=CC=CC=1>[C:12]1([CH3:24])[CH:17]=[C:16]([CH3:18])[CH:15]=[C:14]([CH3:19])[C:13]=1[S:20]([O:7][C:6]1[CH:5]=[CH:4][C:3]([CH3:8])=[CH:2][CH:1]=1)(=[O:21])=[O:22]10.8 g of p-cresol is added to a mixture containing 9.17 g of 48% NaOH, 50 ml of water and 50 ml of toluene. To the resulting mixture is added 22.9 g of mesitylenesulfonyl chloride, and reaction is carried out at 60° to 65° C. for 1 hour. After separating the aqueous layer, toluene is removed from the toluene layer by distillation. The resulting desired compound is purified with methanol.
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