| Autor: |
Ingold, K. U., Snelgrove, D.W., MacFaul, P.A., Oldroyd, R.D., Thomas, J.M. |
| Jazyk: |
angličtina |
| Rok vydání: |
1997 |
| Popis: |
The epoxidation of cyclohexene in acetonitrile under argon at room temperature on a titanium(IV)-containing MCM41 silica catalyst is faster and gives a greater final yield of cyclohexene oxide when the oxygen atom donor is 2-methyl-l-phenyl-2-propyl hydroperoxide (MPPH) than when it is tert-butyl hydroperoxide. This is shown to be due to stronger retardation of the oxidation by tert-butyl alcohol (TBA) than by the alcohol derived from MPPH. The difference in retardation between these two alcohols is attributed to the greater hydrophilicity of TBA. Acetonitrile is a better solvent for this reaction than isooctane, pyridine and a variety of alcohols. These solvent effects are attributed to the hydrophilic nature of the catalyst. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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