Synthesis and Diels-Alder Reactions of α,β-Unsaturated . gamma.-Sultone. -An improved synthesis of the unsaturated sultone (III) and its use in Diels-Alder reactions is described. The sultone cycloadducts can be ring-opened with various nucleophiles such as alcohols and amines.
Chemoselective Multicomponent Synthesis of α,β-Unsaturated Esters and Lactones and of Their Diels-Alder Adducts
✍ Scribed by Prof. Dr. Hans Jürgen Bestmann; Dipl.-Chem. Rainer Schobert
- Publisher
- John Wiley and Sons
- Year
- 1985
- Tongue
- English
- Weight
- 209 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0044-8249
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📜 SIMILAR VOLUMES
Intermolecular hetero Diels-Alder reactions of the treatment with acetyl chloride or dimethyl sulfate. According to this procedure, 21 gives either N-acetyltetrahydropyridine enantiopure sulfinimine 11 with the enol ethers 12-16 at 20 °C and 11 kbar lead to the tetrahydropyridines 18-22 in high 29 o
The chiral α-bromo α,β-unsaturated esters 3 and 9 are react with the kinetic lithium dienolates of enone 10 to give functionalized tricyclo[3.2.1.0 2,7 ]octanes 11. Esters 3 give one prepared by asymmetric Sharpless dihydroxylation (AD) of 5 and from ester 7 and the chiral diols 8 by transacetalizat