Catalytic asymmetric transformations with fine-tunable biphenol-based monodentate ligands
摘要:
A library of new fine-tunable monodentate phosphite and phosphoramidite ligands based on chiral biphenol have been designed and developed. These monodentate phosphorus ligands have exhibited excellent enantioselectivity in the Pd-catalyzed asymmetric allylic alkylation and Rh-catalyzed asymmetric hydrogenation. (c) 2006 Elsevier Ltd. All rights reserved.
Catalytic asymmetric transformations with fine-tunable biphenol-based monodentate ligands
摘要:
A library of new fine-tunable monodentate phosphite and phosphoramidite ligands based on chiral biphenol have been designed and developed. These monodentate phosphorus ligands have exhibited excellent enantioselectivity in the Pd-catalyzed asymmetric allylic alkylation and Rh-catalyzed asymmetric hydrogenation. (c) 2006 Elsevier Ltd. All rights reserved.
Total Synthesis of Enantiopure (+)-γ-Lycorane Using Highly Efficient Pd-Catalyzed Asymmetric Allylic Alkylation
作者:Bruno D. Chapsal、Iwao Ojima
DOI:10.1021/ol060181v
日期:2006.3.1
A highly efficient short total synthesis of (+)-gamma-lycorane (> 99% ee, 41% overall yield) was achieved by using the asymmetric allylic alkylation in the key step catalyzed by palladium complexes with novel chiral biphenol-based monodentate phosphoramidite ligands.