PdCl2 Immobilized in Ionic Liquids: A Novel and Efficient Catalytic System for Michael Additions of Indoles to ,α,β-Unsaturated Ketones

Xufeng      Lin; Sunliang      Cui; Yanguang      Wang

doi:10.2174/157017806776611881

Abstract

Palladium(II) chloride immobilized in ionic liquid [bmim][BF4] catalyzes the Michael reaction of indoles with α,β-unsaturated ketones to afford the corresponding β-indolylketones in excellent yields. The reaction proceeds at 0.1 mol% of Pd loading with high efficiency and great selectivity. The possible mechanism of the reaction was suggested.

Keywords: Palladium(II) chloride, Michael-addition, ionic liquid, indole, α,β-unsaturated ketones

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Letters in Organic Chemistry

Title: PdCl2 Immobilized in Ionic Liquids: A Novel and Efficient Catalytic System for Michael Additions of Indoles to ,α,β-Unsaturated Ketones

Volume: 3 Issue: 5

Author(s): Xufeng Lin, Sunliang Cui and Yanguang Wang

Affiliation:

Keywords: Palladium(II) chloride, Michael-addition, ionic liquid, indole, α,β-unsaturated ketones

Abstract: Palladium(II) chloride immobilized in ionic liquid [bmim][BF4] catalyzes the Michael reaction of indoles with α,β-unsaturated ketones to afford the corresponding β-indolylketones in excellent yields. The reaction proceeds at 0.1 mol% of Pd loading with high efficiency and great selectivity. The possible mechanism of the reaction was suggested.

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Lin Xufeng, Cui Sunliang and Wang Yanguang, PdCl2 Immobilized in Ionic Liquids: A Novel and Efficient Catalytic System for Michael Additions of Indoles to ,α,β-Unsaturated Ketones, Letters in Organic Chemistry 2006; 3 (5) . https://dx.doi.org/10.2174/157017806776611881