| 摘要 |
In a new process for the prodn. of 6-methyl-3,4-dihydro-1,2,3 -oxathiazin-4-one 2,2-dioxide of formula (I), acetoacetamide is reacted with at least 2 molar proportions of SO3, optionally in an inert organic or inorganic solvent, and optionally neutralising acid form of (I) with a base. |
