Synthesis and Reactions of New 4-Oxo-4H-benzopyran-3-carboxaldehydes Containing Hydroxy Groups or 2-Oxopyran Cycles
In: Molecules, Jg. 3 (1998), Heft 6, S. 149-158
Online
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Zugriff:
The synthesis of eight hydroxy- and 2-oxopyranochromone-3-carboxaldehydes 3, 5 and their reactions with 2-hydroxyaniline, 2,4-dinitrophenylhydrazine and 2-benzothiazolylhydrazine were investigated. Products were confirmed by IR, NMR spectral and elemental analysis data. The semi-empirical AM1 quantum-chemical method has been used to study optimal geometries and heats of formation of synthesized 3-formylchromones.
Titel: |
Synthesis and Reactions of New 4-Oxo-4H-benzopyran-3-carboxaldehydes Containing Hydroxy Groups or 2-Oxopyran Cycles
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Autor/in / Beteiligte Person: | Lácová, Margita ; Furdik, Mikulas ; Loos, Dusan ; El-Shaaer, Hafez M. ; Matulová, Mária |
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Zeitschrift: | Molecules, Jg. 3 (1998), Heft 6, S. 149-158 |
Veröffentlichung: | MDPI AG, 1998 |
Medientyp: | unknown |
ISSN: | 1420-3049 (print) |
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