The cobalt-catalysed methoxycarbonylation of polysubstituted bromo, fluoro-and chloro, fluorobenzenes and 1, 2, 4-trichlorobenzene with emphasis on the chemo-and regio- selectivity of the reaction is described. The structures of isolated products of 1, 4-dichloro-2- fluorobenzene carbonylation were determined by single-crystal X-ray diffraction. The fact that the fluorine substituents in the studied compounds remain intact indicates in favor of ...
