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1. General Aspects 2. Synthesis of 3-acyl- and 3-formyl quinolines and coumarins 3. Ringclosure reactions to 1-aryl[4,3-c]fused quinolines and coumarins 4. Synthesis of 4-azido-3-hydrazonoacyl-2-quinolones 5. DSC investigations and ring closure reactions of 4-azido-3-hydrazonoacyl-2-quinolones 6. Synthesis of 1-aryl[4,3-c]quinolones without substituents in position 3 7. DSC investigations and ring closure reactions of 4-azido-3-hydrazonoformyl-2-quinolones 8. References

Thermal Cyclization of 2-Hydrazonoacyl-3-oxo-heterocycles to Pyrazolo[4,3-c]fused Heterocycles