"Annulation reactions toward bicyclic and tricyclic cycloheptyne dicoba" by Yu Ding

Date of Award

2004

Publication Type

Master Thesis

Degree Name

M.Sc.

Department

Chemistry and Biochemistry

Keywords

Chemistry, Organic.

Supervisor

Green, J.

Rights

info:eu-repo/semantics/openAccess

Abstract

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.

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