✦ LIBER ✦

Development of New Chiral P,N Ligands and Their Application in the Cu-Catalyzed Enantioselective Conjugate Addition of Diethylzinc to Enones

✍ Scribed by Xinquan Hu; Huilin Chen; Xumu Zhang

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 95 KB
Volume: 38
Category: Article
ISSN: 0044-8249
DOI: 10.1002/(sici)1521-3773(19991203)38:23<3518::aid-anie3518>3.0.co;2-p

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Synthesis of New Chiral Aryl Diphosphite

Synthesis of New Chiral Aryl Diphosphite Ligands Derived from Pyranoside Backbone of Monosacharides and Their Application in Copper-Catalyzed Asymmetric Conjugate Addition of Diethylzinc to Cyclic Enones

✍ Lailai Wang; Yue-Ming Li; Chiu-wing Yip; Liqin Qiu; Zhongyuan Zhou; Albert S. C. 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 146 KB 👁 1 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

Novel Chiral Pyridine N-Oxide Ligands an

Novel Chiral Pyridine N-Oxide Ligands and Their Application in the Enantioselective Catalytic Reduction of Ketones and the Addition of Diethylzinc to Aldehydes

✍ Volker Derdau; Sabine Laschat; Eike Hupe; Wilfried A. König; Ina Dix; Peter G. J 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 275 KB 👁 1 views

The Catalytic Asymmetric Addition of Die

The Catalytic Asymmetric Addition of Diethylzinc to N-(Diphenylphosphinoyl) Imines Catalyzed by Cu(OTf)2-Chiral N-(Binaphthyl-2-yl)thiophosphoramide Ligands

✍ Min Shi; Chun-Jiang Wang 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 90 KB 👁 1 views

Synthesis of Chiral Amino Alcohols Embod

Synthesis of Chiral Amino Alcohols Embodying the Bispidine Framework and Their Application as Ligands in Enantioselectively Catalyzed Additions to CO and CC Groups

✍ Jan Spieler; Oliver Huttenloch; Herbert Waldmann 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 358 KB 👁 1 views

Two generally applicable routes for the synthesis of chiral amino alcohols embodying the bispidine framework have been developed. In linear route A the bispidine framework is built up successively from chiral primary amines via intermediate formation of a piperidinone and a bispidinone. In convergen

Synthesis of a new chiral ligand, 6, 6′-

Synthesis of a new chiral ligand, 6, 6′-dihydroxy-5, 5′-biquinoline (BIQOL) and its applications in the asymmetric addition of diethylzinc to aldehydes

✍ Yi-Xin Chen; Li-Wei Yang; Yue-Ming Li; Zhong-Yuan Zhou; Kim-Hung Lam; Albert S.C 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 115 KB 👁 1 views

A new chiral ligand 6, 6'-dihydroxy-5, 5'-biquinoline (BIQOL, 2) was prepared via Cu2+ mediated coupling. The resolution was carried out by separating the corresponding ditrifluomethanesulfonate on chiral column. When applied to the enantioselective addition of diethylzinc to aromatic aldehydes, thi