The different nature of carbene ligands is clearly demonstrated by the first ruthenium-based complexes 1, which contain both alkylidene and N-heterocyclic carbene moieties. The latter exhibit a pronounced Lewis base behavior. Moreover, this difference forms the basis of the high catalytic activities
Ruthenium Olefin Metathesis Catalysts for the Ethenolysis of Renewable Feedstocks
✍ Scribed by Yann Schrodi; Thay Ung; Angel Vargas; Garik Mkrtumyan; Choon Woo Lee; Timothy M. Champagne; Richard L. Pederson; Soon Hyeok Hong
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 690 KB
- Volume
- 36
- Category
- Article
- ISSN
- 1863-0650
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✦ Synopsis
Abstract
Ruthenium olefin metathesis catalysts have been evaluated for the ethenolysis of methyl oleate, a natural seed oil derivative, to produce useful terminal olefins. Several N‐heterocyclic carbene‐based ruthenium catalysts demonstrate good activity and selectivity for the formation of terminal olefins. In particular, catalysts (10) and (21) achieved higher TONs (>20 000).
📜 SIMILAR VOLUMES
Scheme 1. Representative chiral catalysts for olefin metathesis. Cy
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1999 structure structure (organic substances) K 9000 06 -015 A Novel Class of Ruthenium Catalysts for Olefin Metathesis. -Title compounds (I) and (II) are readily prepared by reacting Ph-CH=RuCl 2 (PPh 3 ) 2 or Ph-CH=RuCl 2 (PCy 3 ) 2 with 2.2 equivalents of the appropriate imidazolin-2-ylidene. The