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Title: Catalysts and methods for ring opening metathesis polymerization

Patent ·
OSTI ID:1349729
;

The present invention, among other things, provides highly syndiotactic poly(dicyclopentadiene) and/or hydrogenated poly(dicyclopentadiene), compositions thereof, and compounds and methods for preparing the same. In some embodiments, a provided compound is a compound of formula I, II or III. In some embodiments, a provided method comprises providing a compound of formula I, II or III.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FG02-86ER13564
Assignee:
Massachusetts Institute of Technology
Patent Number(s):
9,611,347
Application Number:
14/627,802
OSTI ID:
1349729
Resource Relation:
Patent File Date: 2015 Feb 20
Country of Publication:
United States
Language:
English

References (19)

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Tungsten oxo alkylidene complexes for Z selective olefin metathesis patent July 2015
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Syndioselective Ring-Opening Metathesis Polymerization of endo-Dicyclopentadiene with Tungsten Complexes Having Imido Ligands: Development of Crystalline Syndiotactic Hydrogenated Poly(endo-dicyclopentadiene) journal December 2005
Syntheses of Tungsten tert-Butylimido and Adamantylimido Alkylidene Complexes Employing Pyridinium Chloride As the Acid journal August 2012
Synthesis of Tungsten Oxo Alkylidene Complexes journal October 2012
B(C6F5)3 Activation of Oxo Tungsten Complexes That Are Relevant to Olefin Metathesis journal September 2013
The polymerization of dicyclopentadiene: an investigation of mechanism journal July 1998
Five-Coordinate Rearrangements of Metallacyclobutane Intermediates during Ring-Opening Metathesis Polymerization of 2,3-Dicarboalkoxynorbornenes by Molybdenum and Tungsten Monoalkoxide Pyrrolide Initiators journal August 2012
Synthesis of cis,syndiotactic ROMP Polymers Containing Alternating Enantiomers
  • Flook, Margaret M.; Ng, Victor W. L.; Schrock, Richard R.
  • Journal of the American Chemical Society, Vol. 133, Issue 6, p. 1784-1786 https://doi.org/10.1021/ja110949f
journal January 2011
Ring-opening polymerization of endo and exo-dicyclopentadiene and their 7,8-dihydro derivatives journal July 1986
A New Method for Catalytic Syntheses of Block Copolymers via ROMP: Development of Stereoblock Copoly(endo-dicyclopentadiene) journal May 2008
Hydrogenated Ring-Opened Poly(endo-dicyclopentadiene)s Made via Stereoselective ROMP Catalyzed by Tungsten Complexes: Crystalline Tactic Polymers and Amorphous Atactic Polymer journal June 2006
Stereospecific Ring-Opening Metathesis Polymerization of endo-Dicyclopentadiene by Schrock–Hoveyda Catalyst and Novel Mo- and W-based Complexes. Development of Crystalline Hydrogenated Poly(endo-dicyclopentadiene) journal August 2003
Z-Selective Ring-Opening Metathesis Polymerization of 3-Substituted Cyclooctenes by Monoaryloxide Pyrrolide Imido Alkylidene (MAP) Catalysts of Molybdenum and Tungsten journal August 2013
Regio- and Stereoselective Ring-Opening Metathesis Polymerization of 3-Substituted Cyclooctenes journal March 2011
Ring-opening Polymerization of Norbornene and Its Derivatives by MoCl5, WCl6 and ReCl5 Catalysts journal January 1968
Linear polymerization of endo‐dicyclopentadiene initiated by metathesis catalysts journal November 1987
Molybdenum and Tungsten Imido Alkylidene Complexes as Efficient Olefin-Metathesis Catalysts journal October 2003

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