[C:1]1([CH2:7][SH:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[OH-].[Na+].[C:11]([OH:16])(=[O:15])[C:12]([CH3:14])=[CH2:13]>[Cl-].C([P+](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)C1C=CC=CC=1>[CH2:7]([S:8][CH2:13][CH:12]([CH3:14])[C:11]([OH:16])=[O:15])[C:1]1[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1To a 25 mL three-necked reaction flask, 3.55 mL (0.03 mole) of α-toluenethiol, 0.58 g (1.5×10-3 mole) of benzyl triphenyl phosphonium chloride and 15 mL (0.03 mole) of 2N NaOH solution were added. The resulting solution was heated to 82° C. with agitation for one hour. Thereafter, 2.3 mL (0.027 mole) of methacrylic acid was added dropwise over a 30 minute period to the preheated mixture, and the reaction mixture was heated to 125° C. and maintained under reflux for 18 hours.
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