Process for the manufacture of the potassium salt of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide

US3969347A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

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

Key dates

• Filing date: Jul 16, 1975
• Grant date: Jul 13, 1976
• Expiry date: Jul 16, 1995

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A23L27/30
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The potassium salt practically free of fluoride of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide is prepared by cyclization of acetoacetamide-N-sulfofluoride with at least two moles potassium hydroxide, potassium methylate or a mixture of potassium hydroxide and potassium methylate per mole of sulfofluoride in methanol as solvent containing less than 50 % by weight of water at a temperature of from -20.degree. to +60.degree.C and separating the crystalline potassium salt of the oxathiazinone dioxide from the reaction solution. The compound obtained has a pure sweet taste.