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Immobilization of Pd(Ⅱ) Catalysts for Cyclopropanation in Ionic Liquid
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Cyclopropanation of styrene with ethyl diazoacetate catalyzed by Pd(Ⅱ)in ionic liquid [omim] [BF4] was investigated. Palladium catalysts can be effectively immobilized in ionic liquid.The catalysts PdCl2 and cyclopalladated complex 2 contained in ionic liquid could be recycled for 6 and 7 times, respectively, without losing the efficiency.
ionic liquidcyclopropanationpalladium catalysts
杨帆、张仰明、仇文卫、汤杰、何鸣元
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Center for the Chemistry of Ionic Liquids, Department of Chemistry, East China Normal University,Shanghai 200062, China