Citation: Abhay S. Zambare, Jaiprakash N. Sangshetti, Nagnnath D. Kokare, Devanand B. Shinde. Development of mild and efficient method for synthesis of substituted flavones using oxalic acid catalyst[J]. Chinese Chemical Letters, ;2009, 20(2): 171-174. doi: 10.1016/j.cclet.2008.10.042
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Oxalic acid has been used as a catalyst for intramolecular cyclisation of 2-hydroxychalcones to form flavones in good yields. The efficiency of the catalyst was proved with a variety of substrates ranging from electron-deficient to electron-rich aryl aldehydes and 2-hydroxychalcone.
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Keywords:
- Aromatic aldehydes,
- 2-Hydroxychalcone,
- Oxalic acid,
- Flavones
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