Earlier work'on the bromination of 4-phenylphenyl acetate and benzoate in the presence of iron as a catalyst showed that the acetyloxy radical caused 2-orientation while the larger benzoyloxy group promoted 4'-orientation in the biphenyl nucleus. A study has now been made of the corresponding ester of chloroacetic acid in order to see whether the spatial or other possible influence of this intermediate-sized radical were large enough to inhibit 2- ...
