|
|||||
|
|
| 超声波和Zn/蒙脱石-ZnCl2使芳香醛片呐醇化 | |
| 引用本文： | 刘清福,翟建华,庞国勋.超声波和Zn/蒙脱石-ZnCl2使芳香醛片呐醇化[J].河北科技大学学报,2005,26(1):25-27,35. |
| 作者姓名： | 刘清福 翟建华 庞国勋 |
| 作者单位： | 1. 邢台学院化学系,河北邢台,054001 2. 河北科技大学国际交流与合作处,河北石家庄,050018 3. 河北省人民医院药剂室,河北石家庄,050071 |
| 摘 要： | 用超声波照射Ｚｎ/蒙脱石 ＺｎＣｌ_2和含50%(质量分数)ＴＨＦ的一些芳香醛水溶液2～3ｈ,芳香醛发生偶联反应,生成片呐醇,产率为23%～87%。2,4 二氯苯甲醛、β 苯基丙烯醛发生偶联反应时,片呐醇产率分别达到87.1%和74.8%;对甲基苯甲醛、糠醛发生偶联反应时,化学选择性较好;Ｚｎ/蒙脱石 ＺｎＣｌ_2重复使用3次,活性无显著降低。 |
| 关 键 词： | 片呐醇 芳香醛 超声波 |
| 文章编号： | 1008-1542(2005)01-0025-03 |
| 修稿时间： | 2004年8月8日 |
Pinacolization of aromtic aldehydes using Zn/montmorillonite-ZnCl2 and ultrasound |
|
| LIU Qing-fu,ZHAI Jian-hua and PANG Guo-xun.Pinacolization of aromtic aldehydes using Zn/montmorillonite-ZnCl2 and ultrasound[J].Journal of Hebei University of Science and Technology,2005,26(1):25-27,35. | |
| Authors: | LIU Qing-fu ZHAI Jian-hua and PANG Guo-xun |
| Institution: | LIU Qing-fu~1,ZHAI Jian-hua~2,PANG Guo-xun~3 |
| Abstract: | The coupling reaction aromtic aldehydes leading to pinacols were carried out by using Zn/montmorillonite-ZnCl_2 in 50% aqueous THF under ultrasound with 23%~87% yield.2,4-dichiorophenyl and β-benzaldehyde were coupled with 87.1% and 74.8% yields respectively.When occurs the reaction of pinacols p-methylbenzaldehyde and 2-furaldehyde , the chemistry selectivity is better; Zn/ montmorillonite-ZnCl_2 is repeatedly used for 3 times, with no active notable reduction. Contrasting experiment in progress goes deep into the study of this reaction . Its structure was characterized by IR, ~1H NMR and MS.The advantages of this method lie in moderate condition,high chemical selectivity,high yield and the reusability of the catalyst. |
| Keywords: | pinacllization aromtic aldehyde ultrasound |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《河北科技大学学报》浏览原始摘要信息 | |
| 点击此处可从《河北科技大学学报》下载免费的PDF全文 | |