作者:Scott E. Denmark、David C. Forbes、David S. Hays、Jeffrey S. DePue、Richard G. Wilde
DOI:10.1021/jo00110a049
日期:1995.3
A practical, general and efficient protocol for the catalytic epoxidation of alkenes has been developed. The in situ generation of reactive dioxiranes capable of epoxidizing a variety of alkenes under biphasic conditions has been accomplished using phase transfer catalysts bearing a carbonyl group. Optimal epoxidation conditions employ 10 mol % of 1-dodecyl-1-methyl-4-oxopiperidinium triflate (8d(+)OTf(-)) in a CH2Cl2/pH 7.5-8.0 biphase using potassium monoperoxosulfate (Oxone) as the oxidant. Optimization of the conditions identified (1) slow addition rate, (2) pH 7.5-8.0, (3) N-dodecyl chain, and (4) the triflate salt as key experimental and structural variables. A selection of nine olefins was successfully oxidized to the corresponding epoxides in 83-96% yield.
Hueckel; Blohm, Justus Liebigs Annalen der Chemie, 1933, vol. 502, p. 114,135
作者:Hueckel、Blohm
DOI:——
日期:——
Proximity Effects. XIX. Solvolysis of 4-Cycloöcten-1-yl Brosylate with Trifluoroacetic Acid<sup>1,2</sup>
作者:Arthur C. Cope、J. Martin Grisar、Paul E. Peterson
DOI:10.1021/ja01501a046
日期:1960.8
Potin,P.; Wylde,R., Bulletin de la Societe Chimique de France, 1967, p. 1208 - 1212