Enantioenriched Calcium-(R)-5,5′,6,6′,7,7′,8,8′-Octahydro-BINOL (H8-BINOL): An Efficient Catalyst for the Creation of a Quaternary Stereocenter#
作者:G. Kumaraswamy、Nivedita Jena、M. N. V. Sastry、M. Padmaja、B. Markondaiah
DOI:10.1002/adsc.200404349
日期:2005.5
An efficient catalyst for the creation of a quaternary stereocenter has been developed utilizing easily available, eco-friendly CaCl2 and applied for enantioselective carbon-carbon bond forming reactions. Among the surveyed ligands, it was found that (R)-5,5′,6,6′,7,7′,8,8′-octahydro-BINOL-Ca (2f) gave maximum ee (72%) with excellent yields.
利用容易获得的,生态友好的CaCl 2已经开发了用于形成四元立体中心的有效催化剂,并将其用于对映选择性碳-碳键形成反应。在所调查的配体中,发现(R)-5,5',6,6',7,7',8,8'-八氢联苯酚-Ca(2f)产生的最大ee(72%)具有优异的产量。