Process for preparing crystalline salts of...

Details Process for preparing crystalline salts of... Process for preparing crystalline salts of...

C - Chemistry, Metallurgy

07

D

260/538

C07D 291/06 (2006.01)

Patent

CA 1250000

Abstract of the disclosure: Crystalline salts of acetoacetamide-N-sulfo- fluoride are prepared by reacting amidosulfofluoride H2NSO2F with diketene in the presence of inorganic bases, preferably alkali metal carbonates and/or hydro- gencarbonates, in particular potassium carbonate, in an inert organic solvent. The salts can be further processed with further base, for example with methanolic KOH, into salts of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide; the potassium salt, in particular, is important for use as a sweetener ("Acesulfame").

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