Effect of Addition of Methanol on Catalytic Activity of Polyethylene Glycols as Phase Transfer Catalyst
The dehydrohalogenation of 2-bromooctane in toluene (organic phase) by polyethylene glycols (phase transfer catalyst) was investigated in a batch reactor containing an aqueous solution of potassium hydroxide (aqueous phase). Reaction rates were increased by a factor of 126 at maximum by the addition...
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| Published in | KAGAKU KOGAKU RONBUNSHU Vol. 14; no. 4; pp. 539 - 542 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English Japanese |
| Published |
The Society of Chemical Engineers, Japan
1988
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0386-216X 1349-9203 |
| DOI | 10.1252/kakoronbunshu.14.539 |
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| Abstract | The dehydrohalogenation of 2-bromooctane in toluene (organic phase) by polyethylene glycols (phase transfer catalyst) was investigated in a batch reactor containing an aqueous solution of potassium hydroxide (aqueous phase). Reaction rates were increased by a factor of 126 at maximum by the addition of methanol. The base efficiency (moles of base per mole of catalyst) of polyethylene glycols (PEG) with molecular weights 3000 and 20, 000 exceeded unity and reached 12 at maximum by the addition of methanol. |
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| AbstractList | The dehydrohalogenation of 2-bromooctane in toluene (organic phase) by polyethylene glycols (phase transfer catalyst) was investigated in a batch reactor containing an aqueous solution of potassium hydroxide (aqueous phase). Reaction rates were increased by a factor of 126 at maximum by the addition of methanol. The base efficiency (moles of base per mole of catalyst) of polyethylene glycols (PEG) with molecular weights 3000 and 20, 000 exceeded unity and reached 12 at maximum by the addition of methanol. |
| Author | Goto, Shigeo Ido, Tadaatu Saiki, Motohisa |
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| References | 1) Ido, T., Y.Matsuura and S. Goto : Kagaku Kogaku Ronbunshu., 14,174 (1988 3) Take, J., N. Kikuchi and Y. Yoneda : J. Catal., 21,164 (1971 2) Kimura, Y. and S.L.Regen : J. Org. Chem., 47, 2493 (1982 |
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| SubjectTerms | Basic Catalyst Basicity Chemical Reaction Dehydrohalogenation Phase Transfer Catalyst Polyethylene Glycol |
| Title | Effect of Addition of Methanol on Catalytic Activity of Polyethylene Glycols as Phase Transfer Catalyst |
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