Journal
APPLIED ORGANOMETALLIC CHEMISTRY
Volume 25, Issue 11, Pages 815-819Publisher
WILEY
DOI: 10.1002/aoc.1844
Keywords
cycloisomerisation; enynes; monoterpenes; gold catalyst; platinum catalyst; rhodium catalyst
Categories
Funding
- European Community
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The CO-bubbling effect in cycloisomerization reactions of enynes derived from monoterpenes has been studied using PtCl2, [Rh2Cl2(CO)(4)] and AuCl3 as catalytic systems. All the precursors are efficient catalysts for the cycloisomerization of O-tethered enynes. The reaction proceeds through exo-dig and endo-dig pathways, which are consistent with the exclusive coordination of the alkyne triple bond to the metal center. The CO ligand not only increases the reaction rates but also induces significant variations in the two reaction pathways. Notably, this effect is also strongly dependent on the nature of the starting enyne. Copyright (C) 2011 John Wiley & Sons, Ltd.
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