Annulation reactions toward bicyclic and tricyclic cycloheptyne dicobalt complexes.
Date of Award
Chemistry and Biochemistry
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Cycloheptane containing molecules widely occur in nature; however, the methods for rapid synthesis of those type compounds are limited. This thesis focused on the annulation reactions toward fused ring systems bearing a cycloheptyne dicobalt complex. A series of benzocycloheptyne dicobalt complexes 58 have been synthesized from conjugated (Z) enyne acetate dicobalt complexes 59 by intramolecular Nicholas reactions. Fused [7,6,5] system 101 has also been obtained in a one-pot reaction via [4+3] cycloadditionlintramolecular trapping reaction. In addition, the progress in intramolecular [4+2] cycloaddition of complex 80 is discussed.
Ding, Yu., "Annulation reactions toward bicyclic and tricyclic cycloheptyne dicobalt complexes." (2004). Electronic Theses and Dissertations. 1186.