Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1990-10-10
1992-12-15
Prescott, Arthur C.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
C11D 339, C11D 738
Patent
active
051718839
ABSTRACT:
There is disclosed a process for preparing sulfonyl acids from mercaptans in a single reactor. The mercaptan is converted to a mercaptide and reacted with an acrylic acid or salt thereof in a basic reaction medium. After formation of the thioether, the reaction medium is treated with chlorine gas to oxidize the thioether to the sulfone. Mild conditions and readily available starting materials render the method capable of preparing such acids efficiently in large scale amounts.
REFERENCES:
patent: 4758369 (1988-07-01), Dyroff et al.
patent: 4824591 (1989-04-01), Dyroff et al.
J.A.C.S., 69,238-2335 Reaction of Mercaptans with Acrylic and Methacrylic Derivatives--Hurd, C. D. and Gershbein, L. L. 1947.
J.O.C. 25,1747-1752 S-Alkylmercaptosuccinic Acids--Hendrickson, J. G. and Hatch, L. F. 1960.
J.O.C. 29 (7), 1910-1915--Thiolesters--Schleppnik, A. A. and Zienty, F. B. 1963.
Bolding J. C.
Loyer R. C.
Monsanto Company
Prescott Arthur C.
Shear R. H.
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