| 微波辐射活性炭负载磷钨酸催化合成季戊四醇双缩酮(醛) |
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| 引用本文： | 袁先友,蒋小平,张敏,尹笃林.微波辐射活性炭负载磷钨酸催化合成季戊四醇双缩酮(醛)[J].合成化学,2003,11(1):52-55,64. |
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| 作者姓名： | 袁先友 蒋小平 张敏 尹笃林 |
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| 作者单位： | 1. 零陵学院化学系,湖南,永州,425006
2. 湖南师范大学化学化工学院,湖南,长沙,410081 |
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| 基金项目： | 湖南省教育厅重点资助项目 ( 0 2 B0 2 5 ) |
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| 摘 要： | 在微波辐射下，以活性炭负载磷钨酸为催化剂，不用溶剂，合成了8种季戊四醇双缩酮（醛），以环己酮与季戊四缩的缩合为模型反应进行优化，其优化反应条件为：季戊四醇2．0g，催化剂0．3g，环己酮4．0mL，微波输出功率600W，辐射时间3min，产率达95．4％，该条件下的反应速度是常规加热反应速度的30倍，所得产物经元素分析，IR和1H NMR表征。
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| 关 键 词： | 季戊四醇双缩酮 微波辐射 活性炭负载磷钨酸 季戊四醇 缩醛 合成 催化剂 |
| 文章编号： | 1005-1511(2003)01-052-04 |
Synthesis of Diacetals and Diketals of Pentaerythritol under Microwave Irradiation Catalyzed by HPW/C |
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| YUAN Xian-you ,JIANG Xiao-ping ,ZHANG Min ,YIN Du-lin.Synthesis of Diacetals and Diketals of Pentaerythritol under Microwave Irradiation Catalyzed by HPW/C[J].Chinese Journal of Synthetic Chemistry,2003,11(1):52-55,64. |
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| Authors: | YUAN Xian-you JIANG Xiao-ping ZHANG Min YIN Du-lin |
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| Institution: | YUAN Xian-you 1,JIANG Xiao-ping 1,ZHANG Min 1,YIN Du-lin 2 |
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| Abstract: | Diketals and diacetals were synthesized from 2,2-bis(hydroxymethyl)propane-1,3-diol with aldehydes and ketones under microwave irradiation using phosphotungstic acid supported on active carbon as a catalyst. Under the optimum reaction conditions(pentaerythritol 2.0g, HPW/C 0.3g, cyclohexanone 4.0mL, microwave power 600W, microwave irradiation time 3min),the yield of diketal was 95.4%. The reaction was 30 times faster under microwave irradiation than conventional heating. The products were characterized by elemental analysis, IR and 1H NMR. |
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| Keywords: | microwave irradiation phosphotungstic acid supported on active carbon 2 2-bis(hydroxymethyl)propane-1 3-diol diketalization diacetalization synthesis |
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