207 research outputs found
Catalysis by alkali and alkaline-earth metal ions in nucleophilic attack of methoxide ion on crown ethers bearing an intra-annular acetoxy group
Get PDFRates of reaction of methoxide ion with crown ethers bearing an intra-annular acetoxy group are markedly enhanced by alkali and alkaline-earth metal bromides as a result of much stronger interactions of the metal ions with transition states than with reactants.\ud
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Rates of reactions of methoxide ion with crown ethers bearing an intra-annular acetoxy group markedly enhanced by alkali and alkaline-earth metal bromides as a result of much stronger interactions of the metal ion with transition state than with reactants
Associations of alkali and alkaline earth metal ions with cyclic transition states having crownether-like structure
No full textRing-closure reactions. 11. The activation parameters for the formation of four- to six-membered lactones from ω-bromoalkanoate ions. The role of the entropy factor in small- and common-ring formation
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Ring-closure reactions. 7. Kinetics and activation parameters of lactone formation in the range of 3- to 23-membered rings
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Kinetic evidence for the template effect of added cations on the rate of formation of benzo-18-crown-6 in water solution
No full textIon pairing and reactivity of the alkali-metal derivatives of diethyl 5-bromopentylmalonate
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