HIGHLY REGIOSELECTIVE AROMATIC SUBSTITUTION ON A DIARYLOXIDETRICARBONYLCHROMIUM COMPLEX

Article abstract of DOI:10.1016/S0040-4039(00)98705-7

Ortho-substituted diaryloxide tricarbonylchromium (0) complexes PhOAr-Cr(CO)3, treated with carbanions Nu(-), give, after acid quenching, paradisubstituted complexes NuAr-Cr(CO)3 via a 1,3-hydride migration followed by elimination of phenol: the overall sequence of the reaction consists in a regioselective meta substitution of the phenoxy group by the nucleophile.