[OH:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([O-:11])(=[O:10])=[O:9])=[CH:4][CH:3]=1.[Na+:12].[OH-].[Na+].O.[CH2:16](Cl)[C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1>C(O)C>[CH2:16]([O:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([O-:11])(=[O:9])=[O:10])=[CH:4][CH:3]=1)[C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1.[Na+:12]To a suspension of sodium p-hydroxybenzenesulfonate (40 g, 0.17 mole) in a solution of NaOH (9.61 g, 0.24 mole) and H2O (55 ml), a solution of benzyl chloride (27.6 g, 0.22 mole) in ethanol (35 ml) was added dropwise, and continued to stir for 5 hours under reflux. After standing at room temperature overnight, the precipitate was filtered, washed with H2O and dried to afford 35.2 g of sodium p-benzyloxybenzenesulfonate as white crystals.
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