ISSN:
1434-193X
Schlagwort(e):
Fischer carbenes
;
Michael addition
;
Nitroolefins
;
Chemistry
;
General Chemistry
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
The diastereoselective Michael addition of the title anion to α-hydrogen- and α-methyl-substituted conjugated nitroalkenes leads to new γ-nitrocarbene complexes and γ-hydroximoamides, respectively. The γ-nitrocarbene complexes can be quantitatively oxidized to γ-nitrobutyric acid derivatives (precursors of GABA derivatives); the γ-hydroximoamides are formed as a result of an unexpected intramolecular transfer of an oxygen atom from the nitro group to the carbene atom, with elimination of the pentacarbonylchromium(0) group, which is recovered in high yield as the PyCr(CO)5 complex.
Materialart:
Digitale Medien
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