Sattler, Aaron and Labinger, Jay A. and Bercaw, John E. (2013) Highly Selective Olefin Trimerization Catalysis by a Borane-Activated Titanium Trimethyl Complex. Organometallics, 32 (23). pp. 6899-6902. ISSN 0276-7333. doi:10.1021/om401098m. https://resolver.caltech.edu/CaltechAUTHORS:20131203-152859954
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Abstract
Reaction of a trimethyl titanium complex, (FI)TiMe_3 (FI = phenoxy-imine), with 1 equiv of B(C_6F_5)_3 gives [(FI)TiMe_2][MeB(C_6F_5)_3], an effective precatalyst for the selective trimerization of ethylene. Mechanistic studies indicate that catalyst initiation involves generation of an active TiII species by olefin insertion into a Ti–Me bond, followed by β-H elimination and reductive elimination of methane, and that initiation is slow relative to trimerization. (FI)TiMe_3/B(C_6F_5)_3 also leads to a competent catalyst for the oligomerization of α-olefins, displaying high selectivity for trimers (>95%), approximately 85% of which are one regioisomer. This catalyst system thus shows promise for selectively converting light α-olefins into transportation fuels and lubricants.
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| Additional Information: | © 2013 American Chemical Society. Received: November 12, 2013; Published: November 27, 2013. We thank David VanderVelde for help setting up several NMR experiments, Larry Henling for assistance with crystallographic work, Angelo Di Bilio, Loi Do, and John Anderson for help with EPR experiments, and Harry B. Gray and Jay R. Winkler for helpful discussions. This work was funded by BP through the XC2 program. | |||||||||
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| Issue or Number: | 23 | |||||||||
| DOI: | 10.1021/om401098m | |||||||||
| Record Number: | CaltechAUTHORS:20131203-152859954 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20131203-152859954 | |||||||||
| Official Citation: | Highly Selective Olefin Trimerization Catalysis by a Borane-Activated Titanium Trimethyl Complex Aaron Sattler, Jay A. Labinger, and John E. Bercaw Organometallics 2013 32 (23), 6899-6902 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 42809 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Tony Diaz | |||||||||
| Deposited On: | 03 Dec 2013 23:41 | |||||||||
| Last Modified: | 10 Nov 2021 16:28 |
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