Reactions of Ruthenium(0) Phosphine Complexes with Diphenylacetylene
Hill, Anthony F., Schultz, Madeleine, & Willis, Anthony C. (2004) Reactions of Ruthenium(0) Phosphine Complexes with Diphenylacetylene. Organometallics, 23(24), pp. 5729-5736.
Heating diphenylacetylene with [Ru(CO)2(PPh3)3] in toluene under reflux provides the 2-phenylindenone complex [Ru(4-O=CCPh=CHC6H4)(CO)(PPh3)2], arising from C-H activation of one ortho-proton of diphenylacetylene, hydroruthenation of the triple bond, and cyclization incorporating one carbonyl ligand. Both phosphines are replaced by 1,2-bis(diphenylphosphino)ethane to provide [Ru(4-O=CCPh=CHC6H4)(CO)(dppe)]. In contrast, heating diphenylacetylene with [Ru(CO)3(PPh3)2] in toluene under reflux generates the tetraphenylcyclopentadienone complex [Ru(4-O=CC4Ph4)(CO)2(PPh3)] in high yield, via [2+2+1] alkyne and CO cyclization. The crystal structures of [Ru(4-O=CCPh=CHC6H4)(CO)(PPh3)2], [Ru(4-O=CCPh=CHC6H4)(CO)(dppe)], [Ru(4-O=CC4Ph4)(CO)2(PPh3)], and [Ru(-PhCCPh)(CO)2(PPh3)2] solvates are reported.
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|Item Type:||Journal Article|
|Additional Information:||This article is freely available from the American Chemical Society website 12 months after the publication date. See links to publisher website in this record.|
|Subjects:||Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > OTHER CHEMICAL SCIENCES (039900) > Organometallic Chemistry (039904)|
|Divisions:||Current > Research Centres > Centre for Social Change Research
Past > QUT Faculties & Divisions > Faculty of Science and Technology
|Copyright Owner:||Copyright 2004 American Chemical Society|
|Deposited On:||17 Aug 2007|
|Last Modified:||29 Feb 2012 13:41|
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