Efficient Diphosphane-Based Catalyst for the Palladium-Catalyzed Suzuki Cross-Coupling Reaction of 3-Pyridylboronic Acids
作者:Xing-Li Fu、Lei-Lei Wu、Hai-Yan Fu、Hua Chen、Rui-Xiang Li
DOI:10.1002/ejoc.200900038
日期:2009.5
4′-bis(diphenylphosphanyl)-3,3′-bipyridine (P-Phos) has been developed for the Suzuki cross-coupling reaction of pyridylboronic acid with a variety of aryl halides in good to excellent yields, even in the presence of hindered and functional groups. In addition, P-Phos also exhibited high activity in the palladium-catalyzed Suzuki reaction of 2,6-dimethoxypyridylboronic acid in excellent yields with a fast
已经为铃木交叉偶联开发了一种源自 PdCl2 和 2,2',6,6'-四甲氧基-4,4'-双(二苯基膦酰基)-3,3'-联吡啶(P-Phos)的高活性催化剂体系吡啶基硼酸与各种芳基卤化物的反应,即使在受阻和官能团存在的情况下,也能以良好到极好的收率进行反应。此外,P-Phos 在钯催化的 2,6-二甲氧基吡啶基硼酸的 Suzuki 反应中也表现出高活性,产率高,速度快。还讨论了 P-Phos-钯配合物对这种交叉偶联反应的空间和电子效应。 (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)