Abstract
In free-radical reaction of cis-β-phenylvinylcobaloxime with bromotrichloromethane the primary product, phenylacetylene, arises as a result of elimination, and further it adds the bromotrichloromethane. Similarly proceeds the reaction between β-phenylethylcobaloxime with bromotrichloromethane. The values of absolute rate constants and their relation to the nature of the axial ligand completely agree with the assumption that in the reactions in question similarly to the E2 mechanism of nucleophilic elimination the elimination occurs as one-stage bimolecular process with the simultaneous rupture of C-Co and C-H bonds.
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