- Process for obtaining 4-hydroxy-6-methyl-5,6-dihydro-4H-thieno[2,3-b]thiopyran-7,7-dioxide and its enantiomers, and applications thereof
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The invention relates to a process for obtaining cis-4-hydroxy-6-methyl-5,6-dihydro-4H-thieno[2,3-b]thiopyran-7,7-dioxide, its enantiomers or mixtures thereof, by reduction of 5,6-dihydro-6-methyl-4H-thieno[2,3-b]thiopyran-4-one-7,7-dioxide with a reducing agent which generates hydride ions. The obtained compounds are useful as intermediates in the synthesis of chiral active ingredients.
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Page/Page column 9
(2009/12/23)
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