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An Unexpected Oxidation in the Generation of Cyclopenta[c]piperidines by Ring-Closing Metathesis Amat Tusón, Mercedes Brunaccini, Elisa Checa Castaño, Begoña Pérez Bosch, Maria Llor Brunés, Núria Bosch Cartes, Joan Lactames Alcaloides Compostos bioactius Química orgànica Lactams Alkaloids Bioactive compounds Organic chemistry Ring-closing metathesis reaction of dienes A (n= 1, R= CO2R') leads to fused cyclopentenones C instead of the expected cyclopentene derivatives B. RCM reaction of the other dienes A takes place satisfactorily, affording the expected fused cycloalkene derivatives B. Cyclohexene B (n= 2, R= CO2R') also undergoes oxidation to the corresponding cyclohexenone C. 2021-01-18T07:08:53Z 2021-01-18T07:08:53Z 2009 2021-01-18T07:08:53Z info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Versió postprint del document publicat a: https://doi.org/10.1021/ol901704f Organic Letters, 2009, vol. 11, p. 4370-4373 https://doi.org/10.1021/ol901704f (c) American Chemical Society , 2009 info:eu-repo/semantics/openAccess American Chemical Society Articles publicats en revistes (Farmacologia, Toxicologia i Química Terapèutica)