A stereoselective two step sequence for the construction of fused pyrrolidone ring systems has been developed which features the intramolecular [3+2] dipolar cycloaddition of unsaturated azomethine ylides. The ylides are produced upon reaction of aminomethylphosphonates with so-olefimic aldehydes, f
Cycloadditions of non-stabilized azomethine ylides and quinones synthesis of the Reniera isoindole
β Scribed by Kathlyn A. Parker; Isaac D. Cohen; Albert Padwa; William Dent
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- French
- Weight
- 173 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0040-4039
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## Abstract For Abstract see ChemInform Abstract in Full Text.
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On thermal treatment of the aziridines Sa-f intramolecular cycloaddition reactions of the intermedsteazomethine ylides 6 result in the formation of the metacyclophanes L-9. FoF 7a and 7b the conformational barriers are estimated to-be app';;;ximatzy 20 and 12 kcal/mol, respectively.
## Abstract For Abstract see ChemInform Abstract in Full Text.
## Abstract For Abstract see ChemInform Abstract in Full Text.