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High-pressure and thermally induced intramolecular Diels-Alder reactions of furfuryl fumarates. Influence of tether substituents on diastereoselectivity

✍ Scribed by Thomas Butz; Jürgen Sauer

Book ID
104361045
Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
817 KB
Volume
8
Category
Article
ISSN
0957-4166

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Inter- and intramolecular hetero Diels-Alder reactions, 51. Intermolecular hetero Diels-Alder reactions of enamino ketones. Effect of high pressure on the kinetics and diastereoselectivity
✍ Tietze, Lutz F. ;Hübsch, Thomas ;Ott, Christian ;Kuchta, Gabriele ;Buback, Micha 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 678 KB

## Abstract The hetero Diels‐Alder reaction of the enamino ketones 1b and 1c with ethyl vinyl ether (2) in dichloromethane to give the dihydropyrans 3b/4b and 3c/4c is studied at high pressure up to 5 kbar. The kinetics is measured by on‐line FT‐IR spectroscopy up to 3 kbar. The cycloadditions show