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http://nopr.niscpr.res.in/handle/123456789/16308| Title: | 1,3-Dipolar cycloaddition reactions of substituted open-chain conjugated azomethine N-oxides with substituted N-arylmaleimides leading to the synthesis of new stereoisomeric 2,5 -diaryl-3- (o-nitro)-styryl -4H-2,3,3a,5,6,6a- hexahydropyrrolo [3,4-d] isoxazole-4, 6-dione derivatives |
| Authors: | Singal, Kewal Krishan Singh, Baldev |
| Issue Date: | Mar-1999 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | 1,3-Dipolar cycloaddition of substituted open-chain conjugated azomethine N-oxides 1 with substituted N-arylmaleimides 2 leads to the synthesis of new stereoisomeric 2,5-diaryl-3-(o-nitro)-styryl-4H-2,3,3a,5,6,6a-hexahydropyrrolo [3,4-d] isoxazole-4,6-dione derivatives 3 in excellent yield. These stereoisomers have been characterized as cis-3A and trans-3B on the basis of their spectral measurements and are obtained in the ratio of almost 1:2 respectively in all the reaction, which is the reverse of the stereoisomers obtained through the 'Huisgen reaction’ of C,N-diaryl nitrones with N-aryl maleimides as reported earlier from these laboratories. |
| Page(s): | 292-296 |
| Appears in Collections: | IJC-B Vol.38B(03) [March 1999] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCB 38B(3) 292-296.pdf | 972.62 kB | Adobe PDF | View/Open |
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