Tetrahedron letters

CeCl 3· 7H 2 O/IBX-promoted oxidation of 3-alkylindoles to 3-hydroxyoxindoles

JS Yadav, BVS Reddy, CS Reddy, AD Krishna

文献索引：Yadav; Reddy, B.V. Subba; Reddy, Ch. Suresh; Krishna Tetrahedron Letters, 2007 , vol. 48, # 11 p. 2029 - 2032

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被引用次数: 32

摘要

3-Alkylindoles undergo smooth oxidation with IBX in the presence of CeCl3· 7H2O in aqueous acetonitrile at ambient temperature to afford the corresponding 3-hydroxyoxindoles in high yields. This method is very useful for the direct preparation of 3-hydroxyoxindoles from 3-alkylindoles. Operational simplicity, mild and neutral reaction conditions in aqueous solution are the key features of this protocol.