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Catalytic sulfonylation of phenol by sterically hindered sulfonyl chlorides

Journal Article · · J. Org. Chem. USSR (Engl. Transl.); (United States)
OSTI ID:5949533
The sulfonylation of phenol by substituted arenesulfonyl chlorides XArSo/sub 2/Cl (X = 2-CH/sub 3/, 2-C/sub 2/H/sub 5/, 4-t-C/sub 4/H/sub 9/, 2,4,6-(C/sub 2/H/sub 5/)/sub 3/, 2,4,6-(i-C/sub 3/H/sub 7/)/sub 3/) in the presence of diethylamine in benzene was studied by potentiometric titration. A linear relation was obtained between the logarithms of the catalytic rate constants and the steric constants E/sub s//sup 0/ of the substituents in the sulfonyl chloride. The contribution from the induction and steric effects of the substituents at position 2 to the kinetics of the process was assessed. It was concluded that the steric effects plays a predominant role over the induction and resonance effects.
Research Organization:
Donetsk Polytechnic Institute (USSR)
OSTI ID:
5949533
Journal Information:
J. Org. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Org. Chem. USSR (Engl. Transl.); (United States) Vol. 23:11; ISSN JOCYA
Country of Publication:
United States
Language:
English