## Abstract The title reactions allows the selective synthesis of chlorins.
Silyl Nitronate 1,3-Dipolar Cycloaddition Reactions with meso-Tetraarylporphyrins
β Scribed by O. Senge, Mathias; Moreau, Maxime; M. Ebrahim, Mothi
- Book ID
- 118272864
- Publisher
- Japan Institute of Heterocyclic Chemistry
- Year
- 2011
- Tongue
- English
- Weight
- 641 KB
- Volume
- 83
- Category
- Article
- ISSN
- 0385-5414
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π SIMILAR VOLUMES
The cycloaddition reactions of in situ generated silyl nitronates 3 to chiral enone la or enoate l b proceed with high stereoselectivity to give enantiomericaUy pure N-silyloxyisoxazolidines 4, which can easily be transformed into A2-isuxazolines 5. Based on an X-ray analysis the major diastereomer
## Abstract Nitrone 4 combines with alicyclic thioketones at room temp. affording 1,4,2βoxathiazolidines. Steric hindrance in both reactants affects the cycloaddition/cycloreversion equilibria, but the mobility is still high; the low ΟβLUMO energies of Cο£ΎS are responsible for the __superdipolarophi