CHLOROSULFONATION OF SOME DIPHENYL DERIVATIVES

R Cremlyn, S Montgomery, Y Ng…

Index: Cremlyn, Richard; Montgomery, Stephen; Ng, Yew; Simpson, David Phosphorus and Sulfur and the Related Elements, 1981 , vol. 12, p. 341 - 352

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Citation Number: 9

Abstract

Abstract Benzophenone (1), diphenyl sulfone, and 4-nitro-2′-chloro-and 4-nitro-2′, 6′- dichloro-diphenyl ethers (23, 24) have been chlorosulfonated. The direct yield of benzophenone-3, 3′-disulfonyl chloride (2) was low, the majority of product was the disulfonic acid. Diphenyl sulfone (11) with a large amount of chlorosulfonic acid (8 mols) at 140° gave the 3, 3′-disulfonyl chloride (12). With less reagent (6 mols) at 90° a mixture of ...