Industrially applicable process for the sulfamoylation of alcohols and phenols
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United States of America Patent
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Jun 27, 2006
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app pub date -
Dec 23, 2002
filing date -
Dec 21, 2001
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Abstract
This invention describes a safe method for the production of sulfamoyl chloride from chlorosulfonyl isocyanate and formic acid in the presence of a amide catalyst, taming the hazardous nature of this reaction by circumventing heat accumulation processes, as well as the sulfamoylation of alcohols and phenols with the resulting sulfamoyl chloride in N,N-dimethyl acetamide or N-methyl pyrrolidone thereby avoiding the formation of side-products which were inevitable with the methods of the prior art using dimethyl formamide or dichloromethane as a solvent. The current invention allows industrial scale applications and describes as an example the process of manufacture of the biologically active compound 17.beta.-Hydroxyestra-1,3,5(10)-triene-3-yl sulfamate.
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