Insights: Publications Oligomerization and polymerization of 5-ethylidene-2-norbornene by cationic palladium and nickel catalysts
Polymer Chemistry,11, 2516
Nickel- and palladium-based catalyst systems were developed to convert 5-ethylidene-2-norbornene (ENB) to oligomers and polymers with highly controllable molecular weights. Depending on the choice of central metal ion, supporting ligand, and α-olefin chain transfer agent (CTA), ENB-derived materials ranging from dimers (ca. 270 Da) to high molecular weight polymers (>100 000 Da) were prepared. Typical reactions utilized [(η6-mesitylene)M(η3-2-R-allyl)]+ (M = Pd, R = H; M = Ni, R = Me) in dichloromethane solution at ambient temperature, with tertiary phosphine co-ligands and α-olefins controlling the enchainment. Access to oligomers of cycloolefins with Mn < 2000 Da is noteworthy, particularly considering that ENB is much less reactive than norbornene itself.
Related People
Related Industries
Disclaimer
While we are pleased to have you contact us by telephone, surface mail, electronic mail, or by facsimile transmission, contacting Kilpatrick Townsend & Stockton LLP or any of its attorneys does not create an attorney-client relationship. The formation of an attorney-client relationship requires consideration of multiple factors, including possible conflicts of interest. An attorney-client relationship is formed only when both you and the Firm have agreed to proceed with a defined engagement.
DO NOT CONVEY TO US ANY INFORMATION YOU REGARD AS CONFIDENTIAL UNTIL A FORMAL CLIENT-ATTORNEY RELATIONSHIP HAS BEEN ESTABLISHED.
If you do convey information, you recognize that we may review and disclose the information, and you agree that even if you regard the information as highly confidential and even if it is transmitted in a good faith effort to retain us, such a review does not preclude us from representing another client directly adverse to you, even in a matter where that information could be used against you.
