書誌事項
- タイトル別名
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- Selective Oxidative Dimerization of p-Cresol in Water-Organic Solvent Two Phase Systems.
- Selective Oxidative Dimerization of p-C
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Oxidative coupling reactions of p-cresol with iron (III) chloride in aqueous solution were carried out in the presence of ethyl acetate, chloroform and hexane. The major reaction products were the o-o dimer, o-p dimer and o-o trimer. The influence of organic solvents on the selectivity of o-o dimer production was examined. In all cases, selectivity was improved by the addition of organic solvent at any rate, since the trimerization was prevented. By organic solvents, the o-o dimer could be extracted in preference to the p-cresol monomer during reaction. The dimer was thus efficiently excluded from the aqueous oxidation system where the oxidizing agent, the Fe3+ ion, was present. Ethyl acetate was good for increasing selectivity. The conversion of p-cresol, however, drastically decreased with an increase in the volume of ethyl acetate, since not only the o-o dimer but p-cresol monomer as well were efficiently extracted. The influence of hexane addition on the conversion and product distribution was slight due to the low extraction ability for p-cresol and its oxidized products. When chloroform was added, selectivity was significantly increased with little decline in conversion. Although nearly all the o-o dimer was extracted by chloroform during reaction, the p-cresol monomer was more prone to exist in the aqueous phase in contrast to the system containing ethyl acetate.
収録刊行物
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- 日本油化学会誌
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日本油化学会誌 45 (5), 453-457, 1996
公益社団法人 日本油化学会
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詳細情報 詳細情報について
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- CRID
- 1390001204092304640
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- NII論文ID
- 130001016496
- 10002269157
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- NII書誌ID
- AN10512582
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- ISSN
- 18841996
- 13418327
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- NDL書誌ID
- 3967152
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 抄録ライセンスフラグ
- 使用不可