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Electropolymerized Cr–salen complexes for the heterogeneous asymmetric hetero Diels-Alder reaction

✍ Scribed by Mohamed Mellah; Benoît Ansel; Frédéric Patureau; Arnaud Voituriez; Emmanuelle Schulz


Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
269 KB
Volume
272
Category
Article
ISSN
1381-1169

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✦ Synopsis


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 procedure. Promising attempts to use these catalysts in a multi-substrate procedure are described.


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ChemInform Abstract: Asymmetric Hetero-D
✍ S. E. SCHAUS; J. BRAANALT; E. N. JACOBSEN 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 31 KB 👁 1 views

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