synthesis and application of novel ruthenium catalysts for high temperature alkene metathesis
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2017
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Abstract
Four pyridinyl alcohols and the corresponding hemilabile pyridinyl alcoholato ruthenium carbene complexes of the Grubbs second generation-type RuCl(H2IMes)(O^N)(=CHPh), where O^N = 1-(2′-pyridinyl)-1,1-diphenyl methanolato, 1-(2′-pyridinyl)-1-(2′-chlorophenyl),1-phenyl methanolato, 1-(2′-pyridinyl)-1-(4′-chlorophenyl),1-phenyl methanolato and 1-(2′-pyridinyl)-1-(2′-methoxyphenyl),1-phenyl methanolato, are synthesized in very good yields. At high temperatures, the precatalysts showed high stability, selectivity and activity in 1-octene metathesis compared to the Grubbs first and second generation precatalysts. The 2-/4-chloro- and 4-methoxy-substituted pyridinyl alcoholato ligand-containing ruthenium precatalysts showed high performance in the 1-octene metathesis reaction in the range 80–110 °C. The hemilabile 4-methoxy-substituted pyridinyl alcoholato ligand improved the catalyst stability, activity and selectivity for 1-octene metathesis significantly at 110 °C.
| Reference Key |
tole2017catalystssynthesis
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|---|---|
| Authors | ;Tegene T. Tole;Jean I. du Toit;Cornelia G. C. E. van Sittert;Johan H. L. Jordaan;Hermanus C. M. Vosloo |
| Journal | journal of essential oil research |
| Year | 2017 |
| DOI |
10.3390/catal7010022
|
| URL | |
| Keywords | Keywords not found |
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