Chlorobenzene → 4,4'-Dichlorodiphenyl sulfone

Participants

Reaction Steps

To 112 g (1 mole) of chlorobenzene was added 123 g (1.1 moles) of chlorosulfonic acid at 10° to 20° C. After the addition, while being maintained at 20° to 30° C., the mixture was stirred for 3 hours to complete the reaction. A 0.1 mole quantity of the unreacted chlorobenzene was recovered in the same manner as in Example 1 and 32 g of 4,4'-dichlorodiphenylsulfone was obtained in 25% yield. M.P. 148.5° to 149.5° C. Purity of 99.8%.

Provenance & Evidence