Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 133, Issue 20, Pages 7660-7663Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja200784n
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Funding
- Spanish MICINN [SAF2007-61015, SAF2010-20822-C02, CTQ2008-00810]
- Consolider-Ingenio [2010 CSD2007-00006]
- CSIC
- Xunta de Galicia [GRC2010/12, INCITE09 209 122 PR]
- Comunidad de Madrid [CCG08-CSIC/PPQ3548]
- Diputacion General de Aragon [E35]
- Marie Curie Foundation [PERG06-GA-2009-256568]
- European Social Fund
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We report a ruthenium-catalyzed (2 + 2) intramolecular cycloaddition of allenes and alkenes. We have found that the use of the ruthenium complex RuH2Cl2((PPr3)-Pr-i)(2), which has previously gone unnoticed in catalytic applications, is crucial for the observed reactivity. The reaction proceeds under mild conditions and is fully diastereoselective, providing a practical entry to a variety of bicyclo[3.2.0]heptane skeletons featuring cyclobutane rings.
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