Synthesis of Tungsten Imido Alkylidene Complexes that
Contain an Electron-Withdrawing Imido Ligand

Axtell, Jonathan
C.; Schrock, Richard R.; Müller, Peter; Smith, Stacey J.; Hoveyda, Amir H.

doi:10.1021/om5006676.s002

om5006676_si_002.pdf (714.92 kB)

Synthesis of Tungsten Imido Alkylidene Complexes that Contain an Electron-Withdrawing Imido Ligand

journal contribution

posted on 2015-12-17, 05:07 authored by Jonathan C. Axtell, Richard R. Schrock, Peter Müller, Stacey J. Smith, Amir H. Hoveyda

Tungsten NAr^R alkylidene complexes have been prepared that contain the electron-withdrawing Ar^R groups 2,4,6-X₃C₆H₂ (Ar^X3, X = Cl, Br), 2,6-Cl₂-4-CF₃C₆H₂ (Ar^Cl2CF3), and 3,5-(CF₃)₂C₆H₃ (Ar^(CF3)2). Reported complexes include W(NAr^R)₂Cl₂(dme) (dme = 1,2-dimethoxyethane), W(NAr^R)₂(CH₂CMe₃)₂, W(NAr^R)(CHCMe₃)(OTf)₂(dme), and W(NAr^R)(CHCMe₃)(ODBMP)₂ (DBMP = 4-Me-2,6-(CHPh₂)C₆H₂). The W(NAr^R)(CHCMe₃)(ODBMP)₂ complexes were explored as initiators for the polymerization of 2,3-dicarbomethoxynorbornadiene (DCMNBD).