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Reactions of Organic Anions; CXLIX.<sup>1</sup>Reactions of<i>gem</i>-Dichlorocyclopropanes Containing an Electron-Withdrawing Substituent with Organic Anions Generated with Phase-Transfer Catalysis
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1988
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Asymmetric CatalysisChemical EngineeringPhase-transfer CatalystEngineeringHeterocyclicChemical TransformationPhase-transfer CatalysisGem- Dichlorocyclopropanes 1Organic AnionsOrganic ChemistryElectron-withdrawing SubstituentOrganometallic CatalysisCatalysisChemistryHalogenationGem-disubstituted Cyclopropanes 2Biomolecular Engineering
gem- Dichlorocyclopropanes 1 react with C-H, O-H and S-H acids in the presence of concentrated sodium hydroxide solution and a phase-transfer catalyst to give gem-disubstituted cyclopropanes 2 or chain products 3 in 44-95% yield.