Epoxidation of Cycloolefins with Hydrogen Peroxide in the Presence of Heteropoly Acids Combined with Phase Transfer Catalyst
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Translated
|
| Journal |
Russian Chemical Bulletin
ISSN: 1066-5285
, E-ISSN: 1573-9171
|
| Output data |
Year: 2003,
Volume: 52,
Number: 2,
Pages: 480-486
Pages count
: 7
DOI:
10.1023/A:1023495824378
|
| Tags |
Heteropoly acids, Oxidation of cyclic olefins, Phase transfer catalysis |
| Authors |
Timofeeva M.N.
1
,
Pai Z.P.
1
,
Tolstikov A.G.
1
,
Kustova G.N.
1
,
Selivanova N.V.
1
,
Berdnikova P.V.
1
,
Bryliakov K.P.
1
,
Shangina A.B.
1
,
Utkin V.A.
1
|
| Affiliations |
| 1 |
G. K. Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, 5 prosp. Akad. Lavrent'eva, 630090 Novosibirsk, Russian Federation
|
|
Funding (1)
|
1
|
Russian Foundation for Basic Research
|
01-03-32862
|
Oxidation of cycloolefins (cyclohexene, cyclooctene, and cyclododecene) with a 30% solution of hydrogen peroxide at 65 °C in the presence of heteropoly acids (HPA) H3PW12–x Mo x O40 (x = 0—12), which are precursors of active peroxo complexes, and phase transfer catalysts Q+Cl–, where Q+ is the quaternary ammonium cation containing C4—C18 alkyl groups or [C5H5NC16H33]+, was studied. The catalytic activity decreases in the HPA series: H3PW12O40 > H3PW9Mo3O40 > H3PW6Mo6O40 > H3PW3Mo9O40 > H3PMo12O40. The state of the H3PW12O40—I2I2 system was studied using UV, IR, and 31P NMR spectroscopies with variation of the [H2O2] : [HPA] ratio from 2 to 200 during cyclohexene epoxidation. Despite different catalytic precursors, the reaction proceeds through the same peroxo complex.