Mn(OAc)3-Mediated Unexpected Cycloannulative Sulfonyl Migration Cascade using (E)-β-Iodovinyl Sulfones and ortho-Alkynylphenols for Direct Synthesis of Chromene-Derived Vinyl Sulfones.
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DOI: 10.1021/acs.orglett.3c00309
Abstract: Cycloannulative sulfonyl migration has received much attention; however, a carbon-to-carbon sulfonyl group shift still needs to be discovered. We hereby report a base-mediated oxa-Michael addition-elimination of (E)-β-iodovinyl sulfones with ortho-alkynylphenols, followed by cycloisomerization and unique… read more here.
Keywords: iodovinyl sulfones; sulfonyl migration; cycloannulative sulfonyl; sulfones ortho ... See more keywords