1968
DOI: 10.1039/j29680000219
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The effect of halide ions on the decomposition of ethyl diazoacetate

Abstract: The acid-catalysed decomposition of ethyl diazoacetate has been studied in the presence of sodium perchlorate, potassium chloride, potassium bromide, and potassium iodide. With halide ions some of the product is ethyl halogenoacetate rather than ethyl glycollate. The overall kinetics a n d product ratios have been measured and it has been shown that the halide ions take part in the rate-determining step which leads to halogenoacetate. The rate constants for this process for chloride, bromide, and iodide ions g… Show more

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Cited by 10 publications
(3 citation statements)
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“…Bromobenzene was purchased from Eastman Kodak Co. and was used without further purification. All other materials used have been previously described.8 •23 For a typical product isolation, 15 mL of diazomethane solution in DMSO was prepared in the usual way. This solution also contained enough tetraethylammonium perchlorate to bring the final solution to an ionic strength of 0.2 M. This DMSO solution was allowed to come to 25.0 °C in a thermostat and then 4 mL of aqueous phenolphenate buffer was rapidly added, with stirring, to bring the solution back to 25 °C as quickly as possible.…”
Section: Methodsmentioning
confidence: 99%
“…Bromobenzene was purchased from Eastman Kodak Co. and was used without further purification. All other materials used have been previously described.8 •23 For a typical product isolation, 15 mL of diazomethane solution in DMSO was prepared in the usual way. This solution also contained enough tetraethylammonium perchlorate to bring the final solution to an ionic strength of 0.2 M. This DMSO solution was allowed to come to 25.0 °C in a thermostat and then 4 mL of aqueous phenolphenate buffer was rapidly added, with stirring, to bring the solution back to 25 °C as quickly as possible.…”
Section: Methodsmentioning
confidence: 99%
“…Dies wurde bisher fur Diazoessigester [3] [7], primare Diazoketone [8] und ein primares Diazosulfon [4] nachgewiesen. Wir konnten das Gleiche fur 2,2,2-Trifluor-diazoathan zeigen : in Dioxan-Wasser 60 : 40 bei 15,O" wird die Geschwindigkeit durch Zusatz von ca.…”
unclassified
“…Wir fanden, dass auch anderweitig desaktivierte Diazoalkane wie 2,2,2-Trifluordiazoathan CF3-CHN, rasch und reversibel protoniert werden. Der Nachweis der Reversibilitat erfolgte wie in anderen Fallen [a] durch Untersuchung des kinetischen Isotopeneffekts des Losungsmittels [5], der im vorliegenden Fall KD10/kH20 = [7], primare Diazoketone [8] und ein primares Diazosulfon [4] [9].…”
unclassified