Design and Synthesis of Pyrano[2,3-a]carbazoles by Multicomponent Reaction

, & Karnam Jayarampillai Rajendra Prasad
A facile, efficient, three-component reaction of 2,3,4,9-tetrahydro-1H-carbazol-1-one, malononitrile, and aromatic/heteroaromatic aldehydes in dimethylformamide (DMF) gave pyrano[2,3-a]carbazoles in good yields, at reflux condition, using a catalytic amount of piperidine.
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