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Enantioselective conjugate addition of diethylzinc to cyclic enones catalyzed by copper complexes of methylene-bridged P-chirogenic diphosphines

✍ Scribed by Shin'ichi Taira; Karen V.L. Crépy; Tsuneo Imamoto

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
104 KB
Volume
14
Category
Article
ISSN
0899-0042

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📜 SIMILAR VOLUMES

Modular amino acids-based chiral ligands
Modular amino acids-based chiral ligands for copper-catalyzed enantioselective conjugation addition of diethylzinc to cyclic enones
✍ Shaohua Gou; Zaher M. A. Judeh 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 131 KB 👁 2 views

## Abstract New amino acid‐based modular chiral ligands were readily synthesized and used to catalyze the asymmetric conjugate addition of Et~2~Zn to various cyclic enones in the presence of a variety of copper sources. Moderately high __ee__ of up to 72% were obtained using ligand (__S__)‐**1e** u