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Tethered 2 + 2 + 2 cycloaddition reactions of cobalt-cycloheptyne complexes
Ahmed B Mohamed1, James R Green
1Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON N9B 3P4, Canada.
Chemical Communications (Cambridge, England)
|December 19, 2003
Abstract:
Cycloheptyne-dicobalt hexacarbonyl complexes, substituted by propargylic ether functions, undergo 2 + 2 + 2 cycloaddition reactions with alkynes to give tricyclic benzocycloheptanes; an all-intramolecular version of this transformation is also possible.