SULFUR TRIOXIDE SULFONATION OF DIPHENYL ETHER, DIPHENYL SULFIDE, DIBENZO [B, E][1, 4] DIOXIN, AND XANTHENE

H Cerfontain, A Koeberg-Telder…

Index: Cerfontain, Hans; Koeberg-Telder, Ankie; Lindert, Helen C. A. Van; Bakker, Bert H.; Wit, Peter De Phosphorus, Sulfur and Silicon and the Related Elements, 1994 , vol. 97, # 1-4 p. 239 - 244

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Abstract

Abstract The sulfur trioxide sulfonation of diphenyl ether (1), diphenyl sulfide (2), and the related tricyclic dibenzo-[b, e][1, 4] dioxin (3) and xanthene (4) has been studied. The substrates 1 and 2 both yield initially the 4-sulfonic acid derivative (4-S) and subsequently the 4, 4′-S2. In a large excess of 104.5 wt-% H2SO4 the further sulfonation of 1-4, 4′-S2 gave the 1-2, 4, 4′-S3 and subsequently some 1-2, 4, 2′, 4′-S4. Sulfonation of the ...