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Recent advances in the synthesis of sulfonic acids

El-Hiti, Gamal A. 2001. Recent advances in the synthesis of sulfonic acids. Sulfur Reports 22 , pp. 217-250. 10.1080/01961770108047962

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This review covers some of the methods for preparation of sulfonic acids reported recently. Phenols can be sulfonated directly using concentrated aqueous sulfuric acid. The products obtained can be analysed by several methods, e.g., HPLC and 1H NMR spectroscopy. Dihydroxy and dimesyloxynaphthalenes have been sulfonated by the use of SO3. The sulfonation process was found to be dependent on the reaction conditions and the stoichiometry. Sulfur trioxide alone can be used as a sulfonating reagent to produce sulfonic acids, but sulfur trioxide-base complexes have been found to be more convenient sulfonating reagents, with the advantage that they are easier to handle. For example, (S)-3-amino-2-oxoazetidine-l-sulfoniacc id can be obtained in good yield by the use of a sulfur trioxide-base complex. Sulfur trioxide can be inserted into the metal - carbon bond of various organolithiums and Grignard reagents to produce organic sulfonic acids in high yields.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Subjects: Q Science > QD Chemistry
Uncontrolled Keywords: Sulfonic acids, Sulfonation, Sulfur trioxide, Concentrated aqueous sulfuric acid, Organolithiums, (S)-3-amino-2-oxoazetidine-1-sulfonic acid
Publisher: Taylor & Francis
ISSN: 0196-1772
Last Modified: 19 Mar 2016 22:26

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