Synthesis of Diaryl Ethers through the Copper-Promoted Arylation of Phenols with Arylboronic Acids. An Expedient Synthesis of Thyroxine
David A. Evans*, Jeffrey L. Katz and Theodore R. West
*Department of Chemistry & Chemical Biology, Harvard University, Cambridge, MA 02138, USA, Email: evanschemistry.harvard.edu
D. A. Evans, J. L. Katz, T. R. West, Tetrahedron Lett., 1998, 39, 2937-2940.
Diaryl ethers are readily synthesized in high yield at room temperature through the copper(II)-promoted coupling of arylboronic acids and phenols. The reaction is tolerant of a wide range of substituents on both coupling partners. The reaction conditions permit the racemization-free arylation of phenolic amino acids.
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