Method for the preparation of sulfonic acid esters from free sul

Details Method for the preparation of sulfonic acid esters from free sul Method for the preparation of sulfonic acid esters from free sul

1974-05-09

1976-02-10

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260456R, 260456P, 260983, C07C14316

Patent

active

039377210

ABSTRACT:
Sulfonic acids, particularly amido-substituted sulfonic acids and preferably acrylamidoalkanesulfonic acids, can be esterified by reaction with (A) an ester of phosphoric acid or (B) an adduct of an ester of a strong acid (preferably sulfuric acid) with an amide such as dimethylformamide. This method is especially useful for the preparation of lower alkyl esters, especially the methyl and ethyl esters. The esters are useful monomers, especially for copolymerization with acrylic compounds to produce polymers of improved dyeability.

REFERENCES:
patent: 1321994 (1919-11-01), Downs
patent: 1422564 (1922-07-01), Grob et al.
patent: 2268443 (1941-12-01), Crowder
patent: 2674616 (1954-04-01), Morris
patent: 3160632 (1964-12-01), Toy et al.
patent: 3206492 (1965-09-01), Turbak et al.
patent: 3600470 (1971-08-01), Lewis
Gilbert, "Sulfonation and Related Reactions," pp. 15-16 (1965).
Hoffmann et al., J. Amer. Chem. Soc., 79, 4759 (1957).

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