Formation of Osmium- and Ruthenium-Cyclobutylidene Complexes by Ring Expansion of Alkylidenecyclopropanes

Castro-Rodrigo, R. ; Esteruelas, M.A. (Universidad de Zaragoza) ; Fuertes, S. ; Lopez, A.M. (Universidad de Zaragoza) ; Lopez, F. ; Mascarenas, J.L. ; Mozo, S. ; Onate, E. ; Saya, L. ; Villarino, L.

Resumen: Alkylidenecyclopropanes containing a chelation assistant at the terminal carbon atom of the olefinic moiety undergo an Os- or Ru-promoted ring expansion reaction to afford metal cyclobutylidene derivatives. The process occurs through a novel mechanism that implies a 1,2-migration of a CH2 group of the three-membered ring from an olefinic carbon atom to the other one. It takes place, without direct participation of the metal, on a metallaheterocyclopentene intermediate which is generated from an η2-methylenecyclopropane species stabilized by coordination of the chelation assistant.

Idioma: Inglés

DOI: 10.1021/ja904893j

Año: 2009

Publicado en: Journal of the American Chemical Society 131, 43 (2009), 15572-15573
ISSN: 0002-7863

Factor impacto JCR: 8.58 (2009)

Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 7 / 139 = 0.05 (2009) - Q1 - T1

Financiación: info:eu-repo/grantAgreement/ES/DGA/E35
Financiación: info:eu-repo/grantAgreement/ES/MICINN/CSD2007-00006
Financiación: info:eu-repo/grantAgreement/ES/MICINN/CTQ2008-00810
Financiación: info:eu-repo/grantAgreement/ES/MICINN/SAF2007-61015

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Química Inorgánica (Dpto. Química Inorgánica)