Cymantrene-derived monodentate phosphites: New ligands for Rh-catalyzed enantioselective hydrogenation

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• 作者：Sergey E. Lyubimov ; Vadim A. Davankov ; Nikolay M. Loim ; Lyudmila N. Popova ; Pavel V. Petrovskii ; Petr M. Valetskii ; Konstantin N. Gavrilov
• 关键词：Phosphite ligands ; Cymantrene ; Asymmetric hydrogenation
• 刊名：Journal of Organometallic Chemistry
• 出版年：2006
• 期刊代码：64_0022328x
• 类别：ch
• 出版时间：15 December 2006
• 卷：691
• 期：26
• 页码：5980-5983
• 文件大小：137 K

摘要

Novel chiral monodentate phosphite ligands bearing cymantrene fragment have been prepared. Phosphite 4 with PPh₃, instead of CO-ligand, in cymantrene moiety provided higher enantioselectivity than its unsubstituted analogue 3 in hydrogenation of (Z)-methyl-2-acetamido-3-phenylacrylate.