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Cleavage of both C(sp3)−C(sp2) bonds of alkylidenecyclopropanes: Formation of ethylene−osmium−vinylidene vomplexes

AuthorsCastro-Rodrigo, Ruth ; Esteruelas, Miguel A. ; López, Ana M. ; López, Fernando; Oliván, Montserrat ; Oñate, Enrique ; Saya, Lucía; Villarino, Lara; Mascareñas, José L.
Issue Date10-Feb-2010
PublisherAmerican Chemical Society
CitationJournal of the American Chemical Society 132(2): 454-455 (2010)
AbstractThe complex [OsTp(κ1-OCMe)2(PiPr3)]BF4 [Tp = hydridotris(pyrazolyl)borate] promotes the cleavage of both C(sp3)−C(sp2) bonds of benzylidenecyclopropane and 3-phenylpropylidenecyclopropane to yield the complexes [OsTp(═C═CHR)(η2-CH2═CH2)(PiPr3)]BF4 (R = Ph, CH2CH2Ph). The process is proposed to take place via metallacyclopropene intermediates stabilized by an ethylene chelation assistant. The driving force for the fragmentation is the high stability of the resulting ethylene−Os−vinylidene species.
Description2 páginas, 1 figura, 2 esquemas.
Publisher version (URL)http://dx.doi.org/10.1021/ja909240q
Appears in Collections:(IQOG) Artículos
(ICMA) Artículos
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