The Regioselectivity of the Asymmetric Intermolecular Heck Reaction with Planar Chiral Diphosphine–Oxazoline Ferrocenyl Ligands
作者:Tao Tu、Wei-Ping Deng、Xue-Long Hou、Li-Xin Dai、Xi-Cheng Dong
DOI:10.1002/chem.200204450
日期:2003.7.7
chiral diphosphine-oxazoline ferrocenyl ligands were synthesized and used efficiently in the palladium-catalyzed asymmetric intermolecular Heck reaction of 2,3-dihydrofuran with aryl triflate and cyclohexenyl triflate. The tuning of the regioselectivity was realized by means of different palladium precursors and by changing the electronic factor of the ligands. A plausible rationale based on the existed
合成了一系列新型平面手性二膦-恶唑啉二茂铁配体,并有效地用于钯催化的 2,3-二氢呋喃与三氟甲磺酸芳基酯和三氟甲磺酸环己烯酯的不对称分子间 Heck 反应。区域选择性的调节是通过不同的钯前体和改变配体的电子因子来实现的。提供了基于现有机制的合理理由。