Functionalization of dipyrromethanes via hetero-Diels–Alder reaction with azo- and nitrosoalkenes
5,50-Diethyl- and 5-phenyldipyrromethanes participate in cycloadditions with azo- and nitrosoalkenes giving dipyrromethanes with side chains containing open chain oximes and hydrazones. By controlling reaction stoichiometry it is possible to get mono or 1,9-disubstituted derivatives. The reported me...
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| Other Authors: | , , |
| Format: | article |
| Language: | eng |
| Published: |
2014
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| Subjects: | |
| Online Access: | http://hdl.handle.net/10400.1/5687 |
| Country: | Portugal |
| Oai: | oai:sapientia.ualg.pt:10400.1/5687 |
| Summary: | 5,50-Diethyl- and 5-phenyldipyrromethanes participate in cycloadditions with azo- and nitrosoalkenes giving dipyrromethanes with side chains containing open chain oximes and hydrazones. By controlling reaction stoichiometry it is possible to get mono or 1,9-disubstituted derivatives. The reported methodology gave access to a range of dipyrromethanes with good structural features for various applications. It was demonstrated that reduction of dipyrromethanes containing a-oximino ester groups opens the way to new a-amino esters. |
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