Novel electron-rich bulky phosphine ligands facilitate the palladium-catalyzed preparation of diaryl ethers

A Aranyos, DW Old, A Kiyomori, JP Wolfe…

Index: Aranyos, Attila; Old, David W.; Kiyomori, Ayumu; Wolfe, John P.; Sadighi, Joseph P.; Buchwald, Stephen L. Journal of the American Chemical Society, 1999 , vol. 121, # 18 p. 4369 - 4378

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Citation Number: 479

Abstract

A general method for the palladium-catalyzed formation of diaryl ethers is described. Electron-rich, bulky aryldialkylphosphine ligands, in which the two alkyl groups are either tert- butyl or 1-adamantyl, are the key to the success of the transformation. A wide range of electron-deficient, electronically neutral and electron-rich aryl bromides, chlorides, and triflates can be combined with a variety of phenols with the use of sodium hydride or ...