Tethered 2 + 2 + 2 cycloaddition reactions of cobalt-cycloheptyne complexes.
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.
Mohamed
Ahmed B
AB
Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON N9B 3P4, Canada.
Green
James R
JR