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À propos de : Palladium-Catalyzed Carbon Dioxide Elimination−FixationReaction of 4-Methoxycarbonyloxy-2-buten-1-ols        

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  • Palladium-Catalyzed Carbon Dioxide Elimination−FixationReaction of 4-Methoxycarbonyloxy-2-buten-1-ols
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  • A new type of palladium-catalyzed CO2 recycling reaction using allylic carbonates is described.Reaction of trans-4-methoxycarbonyloxy-2-buten-1-ols in the presence of a palladium catalystproduces cyclic carbonates having a vinyl group via a CO2 elimination−fixation process. A varietyof allylic carbonates participate in the reaction giving cyclic carbonates with high efficiencies.Stereoselective construction of trans-cyclic carbonates is achieved by using nonsymmetric substrates.An enantiospecific reaction proceeds to give chiral cyclic carbonate when a chiral methyl-substitutedsubstrate is subjected to the reaction conditions.
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