High reactivity, regioselectivity, and endo-stereoselectivity of vinyl boranes in Diels-Alder reactions
โ Scribed by Singleton, Daniel A.; Martinez, Jose P.
- Book ID
- 125525064
- Publisher
- American Chemical Society
- Year
- 1990
- Tongue
- English
- Weight
- 284 KB
- Volume
- 112
- Category
- Article
- ISSN
- 0002-7863
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๐ SIMILAR VOLUMES
Alkenylimmonium salts, such as the substituted vinylpyridinium salts, 6, 7, 12, and 16, are easily prepared and are very reactive dienophiIes in Diels-Alder cycloadditions. Recently we reported that alkenyltrialkylammonium salts such as 1 underwent Diels-Alder reactions with dienes such as cyclopen
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