treated directly with a large excess of the nucleophilic reagents. 2-Chlorocyclooctanone oxime was used in the free state, and 2-chloro-5, 9-cyclododecadienone oxime was first treated with nucleophilic reagents; the resulting α-substituted oximes of the 12-membered ring were hydrogenated to the corresponding saturated oximes with palladium charcoal. These reactions have shown that α-chlorocyclo-alkanone