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PHOTOCHEMICAL-REACTIONS OF TRANSITION METAL-OLEFIN COMPLEXES .11. [4+6]-CYCLOADDITION OF TRICYCLO[6.3.0.0(2.7)]UNDECA-3,5-DIENE IN TRICARBONYL-ETA-6-1,3,5-CYCLOHEPTATRIENE-CHROMIUM(0)

1985-01-01
Özkar, Saim
KREITER, CG
The photochemical reaction of tricarbonyl-η6-1,3,5-cycloheptatriene-chromium(0) (I) with tricyclo[6.3.0.02,7]undeca-3,5-diene (II) in n-pentane at 248 K yields the [4 + 6]-cycloadduct tricarbonyl-η6-pentacyclo[7.6.2.110,15.02,8.03,7]octadeca-11,13,16-triene-chromium(0) (III). Detachment of the pentacyclic triene ligand from chromium can be achieved with trimethylphosphite. The constitutions of complex III and of the pentacyclic hydrocarbon IV were determined by spectroscopic means.