Synthesis and Reactions of New 4-Oxo-4H-benzopyran-3-carboxaldehydes Containing Hydroxy Groups or 2-Oxopyran Cycles

Synthesis and Reactions of New 4-Oxo-4H-benzopyran-3-carboxaldehydes Containing Hydroxy Groups or 2-Oxopyran Cycles

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 quantu...

Full description

Bibliographic Details
Main Authors: Hafez M. El-Shaaer, Maria Matulova, Mikulas Furdik, Dusan Loos, Margita Lacova
Format: Article
Language:English
Published: MDPI AG 1998-05-01
Series:Molecules
Subjects:
3-Formylchromones
Vilsmeier - Haack reaction
2-oxobenzopyrane
imines
enamines
AM1 calculations
Online Access:http://www.mdpi.com/1420-3049/3/6/149/

Internet

http://www.mdpi.com/1420-3049/3/6/149/

Similar Items