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N-Heterocyclic carbene catalyzed conjugate umpolung reactions leading to coumarin derivatives

✍ Scribed by Jiang, Yuansong ;Chen, Wanzhi ;Lu, Weimin

Book ID
120379077
Publisher
The Royal Society of Chemistry
Year
2012
Tongue
English
Weight
377 KB
Volume
2
Category
Article
ISSN
2046-2069

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Diastereoselective Synthesis of Trifluoromethylated γ-Butyrolactones via N-Heterocyclic Carbene-Catalyzed Conjugated Umpolung of α,β-Unsaturated Aldehydes
✍ Keiichi Hirano; Isabel Piel; Frank Glorius 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 185 KB 👁 1 views

## Abstract The N‐heterocyclic carbene‐catalyzed conjugate umpolung of differently substituted α,β‐unsaturated aldehydes is described. Coupling of these compounds with a variety of trifluoromethylated ketones results in the selective formation of fluorinated γ‐butyrolactones. Using thiazolium‐deriv