Heteroelectrocyclic reaction of 4-azido-3-hydrazonoalkyl-quinolines to 2-arylaminopyrazolo[4,3-<i>c</i>]quinolones
作者:Gerhard Hojas、Werner Fiala、Wolfgang Stadlbauer
DOI:10.1002/jhet.5570370625
日期:2000.11
derivatives 1 via tosylates 3 or chlorides 5, reacted with arylhydrazines 6 to generate 4-azido-3-hydrazonoalkylquinolines 7. Thermolysis of 7 gave ring closure products which were assigned to 2-arylaminopyrazolo[4,3-c]quinolones 10. The thermal decomposition conditions of the azides 4 and 7 were studied by differential scanning calorimetry (DSC).