Composition comprising 6-methyl-3,4dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide, its salts, preparation thereof and uses therefor

   
   

Acesulfame-K is a widely used sweetener in food and beverage. It is prepared by using the substituted sodium phenoxide or substituted phenol as the starting substance to synthesize the following three intermediates: a substituted phenoxide sulfonylchloride(I), a substituted phenoxide sulfonylamide(II) and an acetoacetamide-N-sulfonyl-substituted phenoxide(III). Particularly, II was prepared by using the liquid or gaseous ammonia to react with I under the action of some catalysts in a reaction column. III was prepared by using II to react with diketene. Acesulfame-K was prepared by ring-closure in III with methanol solution of KOH or K.sub.2 CO.sub.3.

Acesulfame-K es un dulcificante extensamente usado en alimento y bebida. Es preparado usando el phenoxide substituido del sodio o el fenol substituido mientras que la sustancia que comienza sintetiza los tres intermedios siguientes: un sulfonylchloride(I) substituido del phenoxide, un sulfonylamide(II) substituido del phenoxide y un phenoxide(III) acetoacetamide-N-sulfonyl-substituido. Particularmente, II fue preparado usando el amoníaco líquido o gaseoso para reaccionar con I bajo acción de algunos catalizadores en una columna de la reacción. III fue preparado usando II para reaccionar con el diketene. Acesulfame-K fue preparado por el anillo-encierro en III con la solución del metanol del KOH o de K.sub.2 CO.sub.3.

 
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