Imidotungsten(VI) complexes with chelating phenols as ROMP catalysts



: Hakala J, Hanninen MM, Lehtonen A

Publisher: ELSEVIER SCIENCE BV

: 2011

: Inorganic Chemistry Communications

: INORGANIC CHEMISTRY COMMUNICATIONS

: INORG CHEM COMMUN

: 9

: 14

: 9

: 1362

: 1364

: 3

: 1387-7003

DOI: https://doi.org/10.1016/j.inoche.2011.05.021


Tungsten(VI) complexes of the type [W(NPh)Cl(3)(L)] (L = chelating phenolate) were studied as catalyst precursors for ROMP of 2-norbornene, dicyclopentadiene and 5-vinyl-2-norbomene. These compounds form active catalysts when treated by ethyl magnesium bromide. Moreover, polymerisations can be run under ambient atmosphere without complicated inert atmosphere techniques. Synthesis and crystal structure of a new precursor complex [W(NPh)Cl(3)(L(5))] (L(s) = 2,4-di-tert-butyl-6-(phenylthiomethyl)phenolate) are also described. (C) 2011 Elsevier B.V. All rights reserved.



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