Modular synthesis of the ClickFerrophos ligand family and their use in rhodium- and ruthenium-catalyzed asymmetric hydrogenation
作者:Hiroshi Oki、Ichiro Oura、Tatsuhito Nakamura、Kenichi Ogata、Shin-ichi Fukuzawa
DOI:10.1016/j.tetasy.2009.09.004
日期:2009.9
diphosphine ClickFerrophos ligands (CF), based on a triazoleferrocene backbone, was synthesized in a four-step sequence via click chemistry methodology. In addition to the four previously synthesized ligands CF1, CF4, CF7 and CF10, six novel CF ligands CF2–3 and CF5–8 were prepared. Hydrogenation reactions of alkenes and ketones were significantly improved upon by using CF ligands as rhodium- or ruthenium-complexes
一系列基于三唑二茂铁骨架的二膦ClickFerrophos配体(CF)通过点击化学方法以四步顺序合成。除了四个先前合成的配体CF1,CF4,CF7和CF10,六个新颖配体CF CF2 - 3和CF5 - 8制备。通过使用CF配体作为铑或钌配合物,可以显着改善烯烃和酮的氢化反应,其中ee值可以通过根据底物选择合适的CF配体来优化。