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Ethylene polymerization catalysis by vanadium-based systems bearing sulfur-bridged calixarenes

Organometallics, ISSN: 0276-7333, Vol: 30, Issue: 21, Page: 5620-5624
2011
  • 35
    Citations
  • 0
    Usage
  • 14
    Captures
  • 0
    Mentions
  • 0
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Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    35
    • Citation Indexes
      35
  • Captures
    14

Article Description

Calixarenes bridged by thia (?S?), sulfinyl (?SO?), or sulfonyl (?SO -) linkers have been employed as ancillary ligands in vanadium-based ethylene polymerization and in the ring-opening polymerization of ε-caprolactone. For ethylene polymerization, all pro-catalysts [PPh ][VOCl(R-calix[4]areneH)] (R = p-tert-butylthia (?S?) (1), sulfinyl (?SO?) (2), sulfonyl (?SO?) (3)) were highly active, with the system bearing the sulfonyl (?SO ?)-bridged calixarene displaying enhanced activity. The molecular structures of pro-catalysts 2 and 3 are reported. Pro-catalysts 1?3 were inactive for the ROP of ε-caprolactone. © 2011 American Chemical Society.

Bibliographic Details

Carl Redshaw; Lucy Clowes; David L. Hughes; Mark R. J. Elsegood; Takehiko Yamato

American Chemical Society (ACS)

Chemistry

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