Abstract
Cyclisation of diethyl 3-allyloxy-1-propynylphosphonates with Mo(CO)(6) under PK conditions to give 3-substituted-5-oxo-3,5,6,6a-tetrahydro-1H-cyclopenta[c]furan-4-ylphosphonate, 2a-h, in 45-88% isolated yields was done. The R groups are always syn with H(b) (where applicable). The stereochemistry was determined via both NMR and crystal X-ray analysis.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Alkynes / chemical synthesis
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Alkynes / chemistry*
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Bridged Bicyclo Compounds, Heterocyclic / chemical synthesis*
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Carbon Monoxide / chemistry
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Crystallography, X-Ray
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Cyclization
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Ligands
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Molecular Structure
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Molybdenum / chemistry*
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Organophosphonates / chemical synthesis
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Organophosphonates / chemistry*
Substances
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Alkynes
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Bridged Bicyclo Compounds, Heterocyclic
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Ligands
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Organophosphonates
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methylacetylene
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Carbon Monoxide
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Molybdenum