Journal
SYNTHETIC COMMUNICATIONS
Volume 42, Issue 23, Pages 3419-3428Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/00397911.2011.584008
Keywords
Aluminium chloride (AlCl3); azaindoles; azaisatins; indoles; isatins; oxidation; pyridinium chlorochromate (PCC)
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Funding
- Department of Science and Technology (Inspire), New Delhi
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A simple and efficient method is described for the oxidation of 7-azaindoles and indoles to 7-azaisatins and isatins using pyridinium chlorochromate-silica gel (PCC-SiO2) with the aid of Lewis acid catalyst aluminium chloride (AlCl3) in dichloroethane. Simplicity of the reaction conditions, easy workup procedure, and good yields are the key features of this protocol.
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