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Catalyst-Controlled Diastereoselective Hetero-Diels—Alder Reactions.

✍ Scribed by Guy D. Joly; Eric N. Jacobsen

Publisher
John Wiley and Sons
Year
2010
Weight
33 KB
Volume
33
Category
Article
ISSN
0931-7597

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Indium triflate-an efficient catalyst fo
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## 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