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Milder routes to chelated ruthenium complexes for Z-selective metathesis

Rosebrugh, Lauren E. and Herbert, Myles B. and Marx, Vanessa M. and Keitz, Benjamin K. and Grubbs, Robert H. (2013) Milder routes to chelated ruthenium complexes for Z-selective metathesis. In: 245th ACS National Meeting & Exposition, Abstracts of Papers, April 7-11, 2013, New Orleans, LA.

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A novel method to effect the salt metathesis and C-H activation of ruthenium-based, Z-selective metathesis catalysts contg. a chelated N-heterocyclic carbene (NHC) ligand using sodium carboxylates is reported. This method allows for the successful formation of stable chelated species contg. a variety of alterations to the NHC ligand that had decompd. under the previous approach. As such, several new, chelated metathesis-active ruthenium complexes are described, including a catalyst system exhibiting >95% Z-selectivity and record TONs (up to 8100) in homodimerization reactions of terminal olefins. Moreover, a catalyst has been synthesized that gives highly cis, highly tactic polymers via ring opening metathesis polymn. of strained, cyclic olefins, marking the first time tactic polymers have been made using a ruthenium-based metathesis catalysts.

Item Type:Conference or Workshop Item (Paper)
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Grubbs, Robert H.0000-0002-0057-7817
Additional Information:© 2013 American Chemical Society.
Record Number:CaltechAUTHORS:20130718-080531278
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:39432
Deposited By: Tony Diaz
Deposited On:19 Aug 2013 21:28
Last Modified:03 Oct 2019 05:07

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