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| Content Provider | Springer Nature Link |
|---|---|
| Author | Mandelli, Dalmo Kozlov, Yuriy N. Golfeto, Camilla C. Shul’pin, Georgiy B. |
| Copyright Year | 2007 |
| Abstract | Natural terpenes, (−)-limonene and (+)-carvone, can be epoxidized by peroxyacetic acid (PAA) at room temperature if a dinuclear manganese(IV) complex with 1,4,7-trimethyl-1,4,7-triazacyclononane (L), [Mn2L2O3] [PF6]2, is used as a catalyst. The total yield of the epoxides based on the consumed olefins are 97 and 95%, respectively. A kinetic study of the dec-1-ene and cyclohexane oxygenations including the investigation of their simultaneous competitive oxidation was carried out. The olefin epoxidation rate does not depend on dec-1-ene concentration and the dec-1-ene concentration does not affect the rate of cyclohexane oxidation. The cyclohexane oxidation rate is proportional to the alkane concentration. The kinetic analysis led to the conclusion that two species X 1 and X 2 are generated in the system, and there is no their mutual interconversion. The rate equation for the dec-1-ene epoxidation was proposed: W = k +1[cat][PAA], where cat is the initial manganese complex or its derivative, and the constant was determined: k +1 = 3.5 mol−1 dm3 s−1. Species X 1 is apparently an effectively epoxidizing manganese peroxo derivative whereas species X 2 is an alkane hydroxylating manganese oxo complex. |
| Starting Page | 22 |
| Ending Page | 29 |
| Page Count | 8 |
| File Format | |
| ISSN | 1011372X |
| Journal | Catalysis Letters |
| Volume Number | 118 |
| Issue Number | 1-2 |
| e-ISSN | 1572879X |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2007-07-17 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Alkanes Alkyl hydroperoxides Carvone Epoxidation Homogeneous catalysis Limonene Manganese complexes Olefins Oxidation Peroxyacetic acid Terpenes Pharmacy Industrial Chemistry/Chemical Engineering Physical Chemistry Catalysis |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Catalysis |
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