The reaction. profile of a series of palladium-based catalysts was examined in the Suzuki-Miyaura reaction using technical grade 2-propanol as solvent and potassium t-butoxide as base. The results generally show high activity. The method allows for the coupling of electron-rich aryl chlorides with sterically hindered aryl boronic acids to produce tri-ortho-substituted biaryls in high yields using very mild conditions and short reaction times. (C) 2004 Elsevier B.V. All rights reserved.
机构:
Hunan Normal Univ, Key Lab Chem Biol & Tradit Chinese Med Res, Coll Chem & Chem Engn, Changsha 410081, Peoples R ChinaHunan Normal Univ, Key Lab Chem Biol & Tradit Chinese Med Res, Coll Chem & Chem Engn, Changsha 410081, Peoples R China
Li, JH
Zhang, XD
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Hunan Normal Univ, Key Lab Chem Biol & Tradit Chinese Med Res, Coll Chem & Chem Engn, Changsha 410081, Peoples R ChinaHunan Normal Univ, Key Lab Chem Biol & Tradit Chinese Med Res, Coll Chem & Chem Engn, Changsha 410081, Peoples R China
Zhang, XD
Xie, YX
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Hunan Normal Univ, Key Lab Chem Biol & Tradit Chinese Med Res, Coll Chem & Chem Engn, Changsha 410081, Peoples R ChinaHunan Normal Univ, Key Lab Chem Biol & Tradit Chinese Med Res, Coll Chem & Chem Engn, Changsha 410081, Peoples R China