4.8 Article

Thermomorphic Polyethylene-Supported Olefin Metathesis Catalysts

Journal

ORGANIC LETTERS
Volume 13, Issue 15, Pages 3904-3907

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ol2014329

Keywords

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Funding

  1. Robert A. Welch Foundation [A-0639]
  2. National Science Foundation [CHE-0952134]
  3. Qatar National Research Fund [NPRP 28-6-7-7]
  4. Division Of Chemistry
  5. Direct For Mathematical & Physical Scien [0952134] Funding Source: National Science Foundation

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The preparation of polyethylene-oligomer (PEolig)-supported N-heterocyclic carbene ligands (NHCs) and their Ru complexes is described. These complexes are structurally analogous to their low molecular weight counterparts and can serve as thermomorphic, recoverable/recyclable ring. closing metathesis (RCM) catalysts. Because of the Insolubility of PEolig-supported species at 25 degrees C, such complexes can perform homogeneous RCM reactions at 65 degrees C and, upon cooling, precipitate as solids. This allows for their quantitative separation from solutions of products.

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