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Advantageous Use of tBu2P-NP(iBuNCH2CH2)3N in the Hiyama Coupling of Aryl Bromides and Chlorides

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journal contribution
posted on 05.03.2010, 00:00 by Steven M. Raders, Jesudoss V. Kingston, John G. Verkade
An efficient catalytic route to biaryls by employing (generally) only 0.25 mol % of Pd(OAc)2 and 0.5 mol % of 1 in the Hiyama coupling reaction is reported. High yields for electron-rich, -neutral, and -deficient aryl chlorides are obtained. A variety of phenylsiloxanes undergo coupling with aryl bromides and chlorides with low Pd(OAc)2/1 loadings.