New electropolymerized chiral salen-chromium complexes have been successfully used as heterogeneous catalysts for the asymmetric hetero Diels-Alder reaction. These insoluble catalysts were reused up to six times affording the expected products with unchanged enantioselectivity along the recycling pr
✦ LIBER ✦
Chromium-Thiophene-salen-Based Polymers for Heterogeneous Asymmetric Hetero-Diels–Alder Reactions
✍ Scribed by Anaïs Zulauf; Mohamed Mellah; Régis Guillot; Emmanuelle Schulz
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 362 KB
- Volume
- 2008
- Category
- Article
- ISSN
- 1434-193X
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Asymmetric Hetero-Diels-Alder Reactions Catalyzed by Chiral (Salen)Chromium(III) Complexes. -The title reactions between (I) and a wide range of aldehydes require only 2 mol% of the catalyst and afford the pyranone derivatives (III) with good enantioselectivity. Among different derivatives of the c