Towards the synthesis of amino[b,e][1,4]dioxin derivatives via cationic ruthenium complexes
摘要:
Double nucleophilic aromatic substitution reactions between N-substituted (eta(6)-1,2-dichlorobenzene)RuCp(+) salts and substituted 1,2-benzenediols have been carried out under mild conditions to prepare N-substituted (eta(6)-dibenzo[b,e][1,4]dioxin)ruthenium(II) complexes. The dibenzodioxin ligands were subsequently liberated by photolysis, with radiation from a sunlamp or from a medium pressure Hg lamp (300 nm).