Abstract
The decomposition of benzoyl hypochlorite, the intermediate in the Hunsdiecker reaction between chlorine and silver benzoate, is accelerated by light and by azobisisobutyronitrile (AIBN), but not by transition metal ions. The molar yield of the chlorobenzene produced in the decomposition increases as the temperature of the reaction mixture is raised, but is independent of whether or not the reaction is promoted by light or AIBN. It is suggested that this variation in the yield is a result of the readier decarboxylation at higher temperatures of the benzoyloxy radicals which are believed to be intermediates in the decomposition process. No such pronounced effect of temperature on the yield of halides from aliphatic silver carboxylates has been observed, presumably because aliphatic acyloxy radicals decarboxylate readily even at low temperatures.
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