Intra- and intermolecular hetero-Diels-Alder reactions. 16. Stereospecificity in intramolecular hetero-Diels-Alder reactions of 2-benzylidene-1,3-dicarbonyl compounds
β Scribed by Tietze, Lutz F.; Bratz, Matthias; Machinek, Reinhard; Kiedrowski, Guenter V.
- Book ID
- 127330144
- Publisher
- American Chemical Society
- Year
- 1987
- Tongue
- English
- Weight
- 377 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0022-3263
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π SIMILAR VOLUMES
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
Azabutadienes f Isoxazoles f Tetrahydropyridines 1 Diels-Alder reactions / Sequential transformations Condensation of aldehydes 1 ae with 5-amino-3-methylisoxazole (4) gives the corresponding imines 5a-e with a 2-aza-1,3-butadiene moiety, which cyclize selctively, e.g. 5a to form the trans-fused tet
## Abstract The hetero DielsβAlder 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 onβline FTβIR spectroscopy up to 3 kbar. The cycloadditions show