Abstract
Abstract Vinyl sulphones (1-sulphonyl glycals) are formed in good yield by elimination of propanone from 2,3- O -isopropylidene derivatives of D -mannopyranosyl and L -rhanmopyranosyl sulphones. Attempted conjugate addition of carbon nucleophiles to these vinyl sulphones, which are deactivated towards nucleophiles by the ring oxygen atom, was unsuccessful but lithiatlon followed by methylation yielded the 2-methyl vinyl sulphone derivatives when t-butyl sulphones rather than phenyl sulphones were used.
Published Version
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