Palladium-catalyzed formation of diaryl ethers from aryl bromides. Electron poor phosphines enhance reaction yields
G Mann, JF Hartwig
Index: Mann, Grace; Hartwig, John F. Tetrahedron Letters, 1997 , vol. 38, # 46 p. 8005 - 8008
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Citation Number: 143
Abstract
Aryl bromides were converted to diaryl ethers with sodium aryl oxides in the presence of catalytic amounts of Pd (DBA) 2 and DPPF. Isolated yields of over 90% were achieved in reactions with electron deficient aryl bromides and electron rich sodium aryl oxides. Electron poor DPPF derivatives led to increased reaction yields.© 1997 Elsevier Science Ltd.
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