BIARYL FORMATION IN THE PHOTOCHEMICAL REACTION OF HALOGENATED AROMATIC NITRILES WITH METHOXYBENZENES

Irradiation of tetrachloro- and tetrafluoro-phthalonitriles in the presence of anisole, 1,3-dimethoxy-benzene, or 1,4-dimethoxybenzene, led to formation of biaryls; a similar process occurred with mixtures of 1,4-dimethoxybenzene and 2- or 4-chlorobenzonitrile, but not 3-chlorobenzonitrile.