Olefin metathesis catalyst bearing a chelating phosphine ligand |
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| Authors: | Christina Lexer Daniel Burtscher Bernhard Perner Eyal Tzur N Gabriel Lemcoff Christian Slugovc |
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| Institution: | 1. Institute for Chemistry and Technology of Materials (ICTM), Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria;2. Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel;3. Dept. of Chemical Engineering, SCE – Sami Shamoon, College of Engineering, Ashdod 77245, Israel |
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| Abstract: | An improved synthetic procedure for the complex (SPY-5-34)-dichloro-(κ2(C,P)-diphenyl-(2-benzylidene)-phosphine)-(1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydro-imidazol-2-ylidene)-ruthenium (2) was elaborated and the title compound was tested as latent initiator in Ring Opening Metathesis Polymerization (ROMP) and as catalyst for Ring-Closing Metathesis (RCM) at elevated temperatures. While not particularly suited as latent initiator for ROMP, exhibiting a switching temperature of only 42 °C in the polymerization of a typical norbornene derivative, 2 shows an appealing performance in RCM of α,ω-dienes at higher temperatures. |
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