Patent · US Expired

Process for the manufacture of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide and its use as sweetener

US3968106A · kind A · utility

6Cited by

1References

7Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Karl Clauss · Hofheim, DE
Hartmut Pietsch · Bad Homburg vor der Höhe, DE
Erwin Schmidt · Baltmannsweiler, DE
Harald Jensen

Key dates

Filing date	Jul 16, 1975
Grant date	Jul 6, 1976
Priority date	—
Expiry date	Jul 16, 1995

Classification

Technology area (CPC A)Human Necessities
CPC primaryA23L27/30
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

6-Methyl-3,4-dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide and the nontoxic salts thereof are prepared by reacting acetone and fluorosulfonyl isocyanate in a molar proportion of from 14:1 to 150:1 at a temperature of from 0.degree. to 60.degree.C, distilling off the excess acetone from the reaction mixture with acetoacetamide-N-sulfofluoride and bringing about cyclization by a treatment with bases at a pH of from 5 to 12. The oxathiazinone derivatives are used as sweeteners.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.