Phenol → Bisphenol S
Reaction equation
[CH:1]1[C:6]([OH:7])=[CH:5][CH:4]=[C:3]([S:8]([C:11]2[CH:16]=[CH:15][C:14]([OH:17])=[CH:13][CH:12]=2)(=[O:10])=[O:9])[CH:2]=1.[C:18]1([OH:24])[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1.S(=O)(=O)(O)O>>[CH:15]1[C:14]([OH:17])=[CH:13][CH:12]=[C:11]([S:8]([C:3]2[CH:4]=[CH:5][C:6]([OH:7])=[CH:1][CH:2]=2)(=[O:10])=[O:9])[CH:16]=1.[CH:22]1[CH:23]=[C:18]([OH:24])[C:19]([S:8]([C:3]2[CH:4]=[CH:5][C:6]([OH:7])=[CH:1][CH:2]=2)(=[O:10])=[O:9])=[CH:20][CH:21]=1Participants
5
Procedure
It is known to prepare 4,4'-dihydroxydiphenylsulfone from phenol and sulfuric acid. This process yields 4,4'-dihydroxydiphenylsulfone along with large quantities of 2,4'-dihydroxydiphenylsulfone as an isomer by-product. However, extreme difficulty is encountered in separating the 4,4'-dihydroxydiphenylsulfone directly from the resulting reaction mixture.