Development of <i>C</i><sub>2</sub>-Symmetric Chiral Diphosphine Ligands for Highly Enantioselective Hydrogenation Assisted by Ion Pairing
作者:Jianfei Yu、Haowei Zhu、Xumu Zhang、Gen-Qiang Chen
DOI:10.1021/acs.orglett.2c00852
日期:2022.4.15
A new series of C2-symmetrical chiral ferrocene-based diphosphino-ethane ligands termed as f-DPE were developed. Assisted by the ion pairing interaction with the ligand, a wide scope of 2-substituted acrylic acids was hydrogenated to obtain chiral propanoic acids with high yields and enantioselectivities. The well-known anti-inflammatory drugs ibuprofen, naproxen, and flurbiprofen could be synthesized
开发了一系列新的C 2 -对称手性二茂铁基二膦基乙烷配体,称为 f-DPE。在与配体的离子对相互作用的帮助下,广泛的 2-取代丙烯酸被氢化以获得高产率和对映选择性的手性丙酸。可以有效合成著名的抗炎药布洛芬、萘普生和氟比洛芬。此外,通过克级实验证明了当前方法的合成效用。