The radicals formed from photolysis of aqua(alkyl)cobaloximes (R = sec-C4H9, n-C4H9, i-C4H9, c-C5H9 or c-C6H11) in the absence and presence of β-cyclodextrin at room temperature have been characterized by the EPR spin trapping technique using 2-methyl-2-nitrosopropane. It has been found that only the primary alkyl radicals produced by Co-C bond cleavage of the cobaloximes during photolysis undergo 1,2-rearrangement reactions. The spin adducts formed can be included in the cavity of β-cyclodextrin, which plays an important role in stabilizing the primary alkyl radicals.
ASJC Scopus subject areas
- Materials Chemistry