Iridium(III)–vinylidene chemistry: Conversion of an iridacyclopentadiene-chlorido complex and terminal alkynes to iridacyclopentadiene–vinyl complexes

Joseph M. O’Connor,Anna G. Wenzel,Kristin Hiibner

Inorganica Chimica Acta（2008）

Cited 6|Views5

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Abstract

Under anhydrous conditions, reaction of [κ2(C1,C4)-CRCRCRCR](PPh3)2Ir(Cl) and 2-propyn-1-ol generates a [2+2+2] cycloaromatization product. Under aqueous conditions the same reactants form iridium–vinyl complexes bearing the general structure [κ2(C1,C4)-CRCRCRCR](PPh3)2Ir(CO)(κ1-vinyl). In these, the CO ligand is derived from a terminal alkyne carbon and an oxygen atom from water.

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Key words

Iridium(III)–vinylidene,Metallacyclopentadiene,Iridium–vinyl complexes,Iridacyclopentadiene,Iridium complexes,Propargyl alcohol,2-Propyn-1-ol,Oxygen-18 labeling,Cycloaromatization,Trimethyl 1,3-dihydro-3-oxo-4,5,6-isobenzofurantricarboxylate,Allenylidene ligand,Allenylidene complex,Enolallenyl ligand,Allenol,Metallacycle

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