Copper-mediated synthesis of mono- and dichlorinated diaryl ethers
摘要:
An efficient synthesis of polychlorinated diphenyl ethers (PCDEs) using the Cu(OAc)(2)-catalyzed Chan-Lam coupling reaction is described. A library of all possible mono- and dichlorinated diphenyl ether congeners was prepared and characterized using MS, H-1, and C-13 NMR spectroscopy, and Kovats retention indices. Our approach, using the optimized reaction conditions (i.e., reaction temperature, oxidizing atmosphere and base), significantly improves and simplifies the process compared to previously reported syntheses. (C) 2014 Elsevier Ltd. All rights reserved.
Studies on the applications of arene-ruthenium complexes in synthetic approaches to vancomycin: a mild procedure for the selective formation of chlorinated aryl ethers and triaryl diethers
作者:Anthony J. Pearson、Gilles Bignan
DOI:10.1016/0040-4039(95)02301-1
日期:1996.2
excellent selectivity to generate monoarylated ethers under mild conditions. The second halogen may be displaced allowing the synthesis of unsymmetrical and symmetrical triaryl diethers. Methodology for sequential selective displacement of both chlorides by different nucleophiles and a photochemical method for demetallation of the arene-Ruthenium-Cp (η5-cyclopentadienyl) complexes are reported.