Abstract
A cheap, simple, and effective FeCl(3)-catalyzed Conia-ene cyclization of 2-alkynic 1,3-dicarbonyl compounds was stereospecific to afford alkylidenecyclopentanes in (E)-isomers via the 5-exo-dig pathway. The 5-endo-dig and 6-exo-dig cyclizations were also possible, depending on the structure of the substrates.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Alkynes / chemistry*
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Catalysis
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Chlorides / chemistry*
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Cyclization
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Cyclopentanes / chemistry*
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Ferric Compounds / chemistry*
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Iron / chemistry*
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Molecular Structure
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Stereoisomerism
Substances
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Alkynes
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Chlorides
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Cyclopentanes
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Ferric Compounds
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Iron
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ferric chloride