Chlorodifluoromethyl radicals

No traces of products which could arise from the intervention of the chlorodifluoroacetyl radical were observed, although it is possible that these were too involatile to be detected. This suggests that the primary step is of type B where chlorodifluoromethyl radicals and a molecule of carbon monoxide are produced. 

Dichlorotetrafluoroethane is assumed to arise in the products of photolysis by the interaction of the two chlorodifluoromethyl radicals. 

Complex 1 also catalyzes the regioselective radical addition of perhalogeno-ethanes to silyl enol ethers. The primary addition-desilylation products undergo the facile /1-elimination of a chloride to afford a,/3-unsaturated ketones [26, 27]. For example, CF2C1CC13 adds to the trimethylsilyl enol ether of acetophenone to yield /i-chloro-/i-(chlorodifluoromethyl)-a,/ -acetophenone in 80% yield (Eq. 9). 

Yoshida, M. Morinaga, Y Ueda, M. Kamigata, N. Oyoda, M. Conventient preparation of (chlorodifluoromethyl)arenes. Useful precursors for aryldifluoromethyl radicals. Chem. Lett. 1992, 227-230. 

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