Journal of Chemical and Pharmaceutical Research (ISSN : 0975-7384)

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Original Articles: 2011 Vol: 3 Issue: 6

Novel approach for the synthesis of 13-(aryl)-3,6,12,13- tetrahydrochromeno[4,3-b]pyrazolo[4,3-f]quinolin-12-one compounds


A series of chromeno[4,3-b]pyrazolo[4,3-f]quinolinone derivatives has been synthesized via onepot cyclocondensation of 3H-chromene-2,4-dione, aromatic aldehydes and 5-aminoindazole utilizing bis[2-(cyclohexylamino)tropone] Ti(IV) complex in toluene under reflux condition.