Journal
ORGANIC LETTERS
Volume 12, Issue 19, Pages 4380-4383Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ol101860j
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Funding
- MEXT [20037003]
- JSPS
- Grants-in-Aid for Scientific Research [20037003] Funding Source: KAKEN
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A cationic gold(I) complex bearing a semihollow-shaped triethynylphosphine ligand efficiently catalyzed the 7-exo-dig cyclization of silyl enol ethers with an omega-alkynic substituent. The reaction gave various methylenecycloheptane derivatives with an exo- or endocyclic carbonyl group. The protocol was applicable not only to cyclic substrates that form bicyclic frameworks but also to acyclic ones with or without substituents in a carbon chain tether.
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