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Axially 4,4′-di-tert-butyl TunePhos-type chiral diphosphine ligand: synthesis and applications in asymmetric hydrogenation

✍ Scribed by Chun-Jiang Wang; Chu-Bei Wang; Dong Chen; Guangfu Yang; Zhengshun Wu; Xumu Zhang

Book ID
104096125
Publisher
Elsevier Science
Year
2009
Tongue
French
Weight
199 KB
Volume
50
Category
Article
ISSN
0040-4039

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ChemInform Abstract: Axially 4,4′-Di-ter
ChemInform Abstract: Axially 4,4′-Di-tert-butyl TunePhos-Type Chiral Diphosphine Ligand: Synthesis and Applications in Asymmetric Hydrogenation.
✍ Chun-Jiang Wang; Chu-Bei Wang; Dong Chen; Guangfu Yang; Zhengshun Wu; Xumu Zhang 📂 Article 📅 2009 🏛 John Wiley and Sons ⚖ 35 KB 👁 1 views

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Corrigendum to ‘Axially 4,4′-di-tert-but
Corrigendum to ‘Axially 4,4′-di-tert-butyl TunePhos-type chiral diphosphine ligand: synthesis and applications in asymmetric hydrogenation’ [Tetrahedron Lett. 50 (2009) 1038–1040]
✍ Chun-Jiang Wang; Chu-Bei Wang; Dong Chen; Guangfu Yang; Zhengshun Wu; Xumu Zhang 📂 Article 📅 2011 🏛 Elsevier Science 🌐 French ⚖ 172 KB

3 was obtained in high yield through the efficient methylation of the commercially available compound 2 with Me 2 SO 4 at 80 °C in 95% yield.

Axially chiral electron-rich TunePhos-ty
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✍ Yaping Zou; Huiling Geng; Weicheng Zhang; Shichao Yu; Xumu Zhang 📂 Article 📅 2009 🏛 Elsevier Science 🌐 French ⚖ 232 KB

A new electron-rich TunePhos type ligand has been synthesized; excellent enantioselectivities (up to 99% ee) have been achieved in Rh-catalyzed asymmetric hydrogenation of a-dehydroamino acid methyl esters and dimethyl itaconate.