𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Bifunctional cinchona alkaloids-catalyzed asymmetric [4+2] cycloaddition reaction of β,γ-unsaturated α-keto esters with oxazolones

✍ Scribed by Yin Ying; Zhuo Chai; Hai-Feng Wang; Peng Li; Chang-Wu Zheng; Gang Zhao; Yue-Peng Cai

Book ID
108283555
Publisher
Elsevier Science
Year
2011
Tongue
French
Weight
404 KB
Volume
67
Category
Article
ISSN
0040-4020

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

ChemInform Abstract: Bifunctional Cincho
ChemInform Abstract: Bifunctional Cinchona Alkaloids-Catalyzed Asymmetric [4 + 2] Cycloaddition Reaction of β,γ-Unsaturated α-Keto Esters with Oxazolones.
✍ Yin Ying; Zhuo Chai; Hai-Feng Wang; Peng Li; Chang-Wu Zheng; Gang Zhao; Yue-Peng 📂 Article 📅 2011 🏛 John Wiley and Sons ⚖ 33 KB 👁 1 views

## Abstract Asymmetric [4 + 2] cycloaddition of β,γ‐unsaturated α‐keto esters (I) and (IV) with oxazolones (II) proceeds with excellent diastereoselectivity and high enantioselectivity (up to 97% e.e.) in the presence of a quinidine‐derived bifunctional organocatalyst (NQD).