The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 04, 1976
Filed:
Jan. 22, 1973
Charles W Deyoe, Manhattan, KS (US);
Paul A Seib, Manhattan, KS (US);
R Carl Hoseney, Manhattan, KS (US);
Kansas State University Research Foundation, Manhattan, KS (US);
Abstract
A method is provided for the synthesis of L-ascorbate 2-sulfate compounds and salts thereof which comprises reacting L-ascorbic acid or the salts thereof of the formula ##EQU1## WHERE Z represents hydrogen or a cation capable of bonding with L-ascorbic acid, and n.sub.1 is the valence of Z, with a base-sulfur trioxide complex of the formula ##EQU2## where A represents a tertiary amine, tertiary amide, ether or thioether, the reaction being carried out in a compatible solvent and in the presence of sufficient base to render the C.sub.2 hydroxyl of the L-ascorbic acid more ionized than the C.sub.5 and C.sub.6 hydroxyls thereof. The process effects quantitative conversion of L-ascorbic acid to L-ascorbate 2-sulfate, and pure compounds of the latter are isolated in good yields. Such compounds have been found to act as stable vitamin C sources in food systems or the like.