[4 + 2]-Cycloaddition with Inverse Electron Demand: Reaction of 3-Vinylindoles with Dimethyl 1,2,4,5-Tetrazine-3,6- dicarboxylate
The 1'-substituted 3-vinylindoles 1a and 1b react locoselectively with the tetrazine 2 to form the corresponding 1,4-dihydro-1,2-diazines. The 2'-methoxy-substituted compound 1c yields the 4-(indol-3-yl)-substituted 1,2-diazine 5 on reaction with the tetrazine 2. The reactions proceed thr...
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| Main Authors: | , |
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| Format: | Article |
| Language: | deu |
| Published: |
Swiss Chemical Society
1987-04-01
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| Series: | CHIMIA |
| Online Access: | https://www.chimia.ch/chimia/article/view/9784 |
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| Summary: | The 1'-substituted 3-vinylindoles 1a and 1b react locoselectively with the tetrazine 2 to form the corresponding 1,4-dihydro-1,2-diazines. The 2'-methoxy-substituted compound 1c yields the 4-(indol-3-yl)-substituted 1,2-diazine 5 on reaction with the tetrazine 2. The reactions proceed through [4 + 2]-cycloaddition, [4 + 2]-cycloreversion, and, in the case of the reaction of 1c, an additional elimination of methanol.
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| ISSN: | 0009-4293 2673-2424 |