Asymmetric Hetero-Diels-Alder Reactions with Heterocumulenes. -Chiral 2-alkenyloxazolines or thiazolines (I) and (IV) undergo hetero-Diels-Alder reaction with the ketene (II) or the isocyanate (VI) giving adducts with complete stereocontrol. In the case of oxazoline (I) a fast second addition yield
Solvent effects in asymmetric hetero Diels-Alder and ene reactions
✍ Scribed by Mogens Johannsen; Karl Anker Jørgensen
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- French
- Weight
- 358 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0040-4020
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## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v
Hetero Diels-Alder reactions / Enamino ketones 1 High-pressure reactions / Pyrans The hetero Diels-Alder reaction of enamino ketone 1 with the vinyl ethers 7-11 leading to the dihydropyrans 12a-e and 13ae is studied in dichloromethane under high pressures up to 7 kbar. The kinetics is measured by o