Chromium hydride intermediates in the case of cine and tele-meta nucleophilic aromatic substitution on arenetricarbonylchromium complexes
摘要:
Treatment of (eta(6)-1,2,3-trimethoxybenzene) and (eta(6)-veratrole) tricarbonylchromium complexes 1 and 5 with a carbanion in THF and then with acid affords as the major products 4-substituted (eta(6)-veratrole) and 3-substituted (eta 6-anisole) tricarbonylchromium complexes according to tele-meta and cine nucleophilic aromatic substitutions, respectively.