O.[OH-].[Na+].[S:4]([C:14]1[CH:19]=[CH:18][C:17]([OH:20])=[CH:16][CH:15]=1)([C:7]1[CH:12]=[CH:11][C:10]([OH:13])=[CH:9][CH:8]=1)(=[O:6])=[O:5].[CH2:21](Br)[CH:22]=[CH2:23].[C:25]1(C)[CH:30]=CC=C[CH:26]=1>[Cl-].C([N+](CCCCCCCC)(CCCCCCCC)C)CCCCCCC>[CH2:21]([O:13][C:10]1[CH:11]=[CH:12][C:7]([S:4]([C:14]2[CH:19]=[CH:18][C:17]([O:20][CH2:30][CH:25]=[CH2:26])=[CH:16][CH:15]=2)(=[O:6])=[O:5])=[CH:8][CH:9]=1)[CH:22]=[CH2:23]A flask was charged with 150 parts of water, 150 parts of toluene, 12 parts of caustic soda, and 25 parts of 4,4'-sulfonyldiphenol, and the resulting mixture was dissolved completely to form a solution. To this solution were added 1 part of trioctylmethylammonium chloride (a phase transfer catalyst) and then 36.3 parts of allyl bromide. The resulting solution was reacted at 50° to 60° C. for 15 hours, and toluene was steam-distilled to obtain pale yellow crystals. After filtration, the crystals were washed with 100 parts of methanol to obtain white crystals of bis(4-allyloxyphenyl) sulfone of formula (4). Yield: 30.5 parts (91.2%), m.p.: 143° to 146° C.
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