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相转移催化法合成环己酮的研究 被引量:5

Study on synthesis of cyclohexanone by phase transfer catalysis
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摘要 以质量分数为30%的过氧化氢为氧化剂,对相转移催化环己醇合成环己酮进行了研究.考察了十六烷基三甲基溴化铵、钨酸钠与不同配体(草酸、水杨酸、磺基水杨酸、8-羟基喹啉)形成的相转移催化荆对标题反应的催化能力.发现十六烷基三甲基溴化铵、钨酸钠与磺基水杨酸配体形成的相转移催化荆的催化能力最佳.在相转移催化剂作用下,对反应条件进行了优化.结果表明,反应的最佳条件为,环己醇、W、磺基水杨酸、30%过氧化氢、十六炕基三甲基溴化铵物质的量比为100:2:2:100:1,反应温度为80~85℃,反应时间为4h,环己酮的收率可达到67.91%. The oxidation of cyclohexanol to cyclohexanone was investigated with 30 % hydrogen peroxide by using sodium tungstate, ligand (oxalic acid, salicylic acid, sulfosalicylic acid and 8-hydroxyquinoline) and cetyl trimethyl ammonium bromide (CTAB) as phase transfer catalyst system. The different catalytic systems were discussed. The results showed that sodium tungstate, sulfosalicylic acid as ligand and CTAB had effective catalytic ability. The effects of various reaction parameters such as the ratio of materials, catalyst amount, reaction temperature and reaction time were investigated. The optimum reaction conditions was.. the mole ratio of cyclohexanoI:W: sulfosalicylic acid: hydrogen peroxide (30 % ) :CTAB, 100:2:2: 100:1 ; reaction temperature, 80-85℃ ; reaction time, 4 h. The yield of cyclohexene reached 67.91%.
出处 《周口师范学院学报》 CAS 2008年第2期74-76,共3页 Journal of Zhoukou Normal University
基金 周口师范学院科研启动基金
关键词 相转移催化剂 钨酸钠 过氧化氢 环己酮 环己醇 phase transfer catalyst sodium tungstate hydrogen peroxide cyclohexanone cyclohexanol
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  • 2TROST M B, MASUYAMA Y. Chemoselectivity in molybdenum catalyzed alcohol and aldehyde oxidation [J]. Tetrahedron Lett, 1984, 25(2): 173-716.
  • 3Indira V, Joy P A, Gopinathan S,et al. Oxidation of cyclohexanol to cyclohexanone using transition metal substituted dodecatungstophosphates [J]. Indian J. Chem, 1998, 37A:261-263.
  • 4魏俊发,石先莹,何地平,张敏.无有机溶剂、无相转移催化剂条件下稀H_2O_2氧化环己醇为环己酮[J].科学通报,2002,47(21):1628-1630. 被引量:15

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