Tetrahedron Letters

Synthesis of diaryl ethers through the copper-promoted arylation of phenols with arylboronic acids. An expedient synthesis of thyroxine

DA Evans, JL Katz, TR West

Index: Evans, David A.; Katz, Jeffrey L.; West, Theodore R. Tetrahedron Letters, 1998 , vol. 39, # 19 p. 2937 - 2940

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Citation Number: 645

Abstract

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. These reaction conditions permit the racemization-free arylation of phenolic amino acids, methodology that has been applied to an efficient synthesis of thyroxine.