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Sulfonation and sulfation on reaction of 1,2-dihydroxybenzene and its methyl ethers in concentrated aqueous sulfuric acid

✍ Scribed by Hans Cerfontain; Norbert J. Coenjaarts; Ankie Koeberg-Telder

Publisher: Elsevier Science
Year: 2010
Tongue: English
Weight: 480 KB
Volume: 107
Category: Article
ISSN: 0165-0513
DOI: 10.1002/recl.19881070405

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## Abstract The reaction of the three tetramethylbenzenedisulfonic acids and some lower homologues in concentrated aqueous sulfuric acid has been studied at 25deg;C. 3,4,5,6‐Tetramethylbenzene‐1,2‐disulfonic acid undergoes both intramolecular disulfonic anhydride formation (the rate of which strong