Replacement of dipolarophile of 1,3-cycloadduct
โ Scribed by Kwok Kun Sun
- Book ID
- 104218121
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- French
- Weight
- 112 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
Novel double 1,3_cycloreversion and the replacement of dipolarophile of the bisadducts of 3-phenyl sydnone and N-phenylmaleimide are described.
The double 1,3_cycloaddition of 3-phenylsydnone to two molecules of N-phenylmaleimide to form carbon dioxide and two iscmeric bisadducts, the bisphenylimide of iscmeric 7-
๐ SIMILAR VOLUMES
## Dedicated to Professor Hans-Jยธrgen Hansen on the occasion of his 65th birthday The 1,3-dipolar cycloaddition of 2,2,4,4-tetramethyl-3-thioxocyclobutanone S-methylide (2a), generated in situ by thermal extrusion of N 2 from the corresponding 2,5-dihydro-1,3,4-thiadiazole 1a, with electron-defici
O Cu
Pentacyclic isoxazolines were obtained by the cycloaddition of benzonitrile oxide to norbornene-azetidinone-fused 3,1-oxazines. The constitutions of two of the isomers obtained, and the configurations and conformations of all products, were determined by means of H and C NMR spectroscopy and DNOE ex
The steric structures of the tetracyclic mono-and the pentacyclic bis-adducts formed in the cycloadditions of norbornane-and norbornene-fused 1,3-and 3,l-dihydrooxazine dipolarophiles with diphenylnitrilimine or henzonitrile oxide were investigated. These reactions could yield 2-8 annellation and po
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