Iron-catalyzed intermolecular [2π+ 2π] cycloaddition

SK Russell, E Lobkovsky, PJ Chirik

Index: Russell, Sarah K.; Lobkovsky, Emil; Chirik, Paul J. Journal of the American Chemical Society, 2011 , vol. 133, # 23 p. 8858 - 8861

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Citation Number: 61

Abstract

The bis (imino) pyridine iron dinitrogen compounds,(iPrPDI) Fe (N2) 2 and [(MePDI) Fe (N2)] 2 (μ2-N2)(RPDI= 2, 6-(2, 6-R2-C6H3N CMe) 2C5H3N; R= iPr, Me), promote the catalytic intermolecular [2π+ 2π] cycloaddition of ethylene and butadiene to form vinylcyclobutane. Stoichiometric experiments resulted in isolation of a catalytically competent iron metallocycle intermediate, which was shown to undergo diene-induced C–C reductive elimination. ...

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