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Chiral Mono- and Bidentate Ligands Derived from D-Mannitol and Their Application in Rhodium(I)-Catalyzed Asymmetric Hydrogenation Reactions

✍ Scribed by Alexander Bayer; Petra Murszat; Ulf Thewalt; Bernhard Rieger


Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
213 KB
Volume
2002
Category
Article
ISSN
1434-1948

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Synthesis of New Chiral Aryl Diphosphite
✍ Lailai Wang; Yue-Ming Li; Chiu-wing Yip; Liqin Qiu; Zhongyuan Zhou; Albert S. C. 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 146 KB 👁 2 views

## Abstract New chiral aryl diphosphite ligands based on the pyranoside backbones of glucose and galactose were prepared. These ligands were tested in the Cu‐catalyzed asymmetric conjugate addition of diethylzinc to cyclic enones with up to 88% ee. The stereoselectivity was found to be dependent on