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Enantioselective 1,3-dipolar cycloaddition reactions using complexes of (−)-sparteine

✍ Scribed by Mirosław Gucma; W. Marek Gołȩbiewski

Publisher
Journal of Heterocyclic Chemistry
Year
2008
Tongue
English
Weight
331 KB
Volume
45
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

magnified image

Regio‐ and stereoselective 1,3‐dipolar cycloaddition of nitrile oxides to internal 2‐pentenols and α,β‐unsaturated esters catalyzed by (−) sparteine‐lanthanide complexes affords corresponding 3‐aryl‐2‐isoxazolines with enantioselectivities up to 68% ee.

📜 SIMILAR VOLUMES

Enantioselective 1,3-dipolar cycloadditi
Enantioselective 1,3-dipolar cycloaddition reactions using chiral lanthanide catalysts
✍ W. Marek Gołȩbiewski; Mirosław Gucma 📂 Article 📅 2008 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 249 KB

## Abstract magnified image Regio‐ and stereoselective 1,3‐dipolar cycloaddition of nitrile oxides to internal 2‐pentenols, α,β‐unsaturated esters and amides catalyzed by __R__‐(+) BINOL‐lanthanide complexes affords corresponding 3‐aryl‐2‐isoxazolines with enantioselectivities up to 89% ee.