Summary.
Indole-2-carboxylic acid hydrazide was prepared and allowed to react with aromatic aldehydes in acidic medium to give the corresponding hydrazone derivatives in good yields. The hydrazones were cyclized to indolo[2,3-d]pyridazine derivatives by refluxing with acetyl chloride. The indole carbohydrazide was converted to 2-triazolylindoles which acted as starting materials for several indole derivatives. A number of new indole derivatives were also prepared and structurally confirmed.
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Received October 17, 2000. Accepted (revised) December 12, 2000
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El-Wareth, A., Sarhan, A. On the Synthesis and Reactions of Indole-2-carboxylic Acid Hydrazide. Monatshefte fuer Chemie 132, 753–763 (2001). https://doi.org/10.1007/s007060170091
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DOI: https://doi.org/10.1007/s007060170091