| 丁二酮肟与 TEMPO 协同催化氧化醇 |
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| 引用本文： | 郑帅帅,郑庚修,赵晶晶.丁二酮肟与 TEMPO 协同催化氧化醇[J].济南大学学报(自然科学版),2012,26(2):143-146. |
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| 作者姓名： | 郑帅帅 郑庚修 赵晶晶 |
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| 作者单位： | 济南大学化学化工学院,山东济南,250022 |
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| 基金项目： | 山东省科技发展计划﹙2008GG10002021﹚ |
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| 摘 要： | 以 2，2，6，6-四甲基哌啶氮氧自由基（TEMPO）为催化剂，通过丁二酮肟以及溴化铜助催化剂的促进作用原位产生了氮羰基阳离子（TEMPO+），实现了在碱性水溶液中催化氧气氧化苯甲醇制备苯甲醛。探讨温度、氧气压力和反应时间等因素对反应的影响。结果表明：气相色谱（GC）检测未发现过氧化现象发生，在反应温度为 80oС ，氧压力为 0. 3 MPa，反应时间为 6 h，K2CO3浓度为 0. 2 mol/L 时，苯甲醇转化率达到 98%，苯甲醛选择性达到 100%。
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| 关 键 词： | TEMPO 催化剂 催化氧化 丁二酮肟 苯甲醇 |
Oxidation of Alcohols Using Dimethylglyoxime and TEMPO |
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| ZHENG Shuai-shuai
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ZHENG Geng-xiu
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ZHAO Jing-jing.Oxidation of Alcohols Using Dimethylglyoxime and TEMPO[J].Journal of Jinan University(Science & Technology),2012,26(2):143-146. |
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| Authors: | ZHENG Shuai-shuai ZHENG Geng-xiu ZHAO Jing-jing |
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| Institution: | (School of Chemistry and Chemical Engineering,University of Jinan,Jinan 250022,China) |
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| Abstract: | TEMPO(2,2,6,6-tetramethylpiperidine-N-oxyl) was employed to catalyze the selective oxidation of benzyl alcohol to benzyl aldehyde using molecular oxygen.Dimethylglyoxime and CuBr2 were used to promote the in situ generation of TEMPO+in this catalytic system.The influencing factors on the reaction,including temperature,oxygen pressure and time,have been determined.It is suggested that no over-oxidation is detected by GC.98% conversion and 100% selectivity of benzyl aldehyde can be obtained under the following conditions:reaction temperature 80 ℃,oxygen pressure 0.3 MPa,reaction time 6 h,and 0.2 mol/L concentration of K2CO3. |
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| Keywords: | organic synthesis TEMPO catalyst oxidation dimethylglyoxime |
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