A new β-CD inclusion complex with a seven-membered ring bridged organocobaloxime

This work demonstrates that by providing a confined environment, the cyclodextrin binding promotes the debromination reaction of aqua-(4-bromobutyl)cobaloxime to form a novel seven membered ring aqua(O-tetramethylene-CHEL)cobaloxime, which is included in the β-CD cavity and could not be prepared in the absence of β-cyclodextrin.