引用本文:
李毅群, 周美云, 徐欣明, 欧亦群. 羧甲基纤维素支载三亚乙基四胺催化Knoevenagel反应[J]. 应用化学,
2003, 20(1): 89-91.
Citation: LI Yi-Qun, ZHOU Mei-Yun, XU Xin-Ming, OU Yi-Qun. Carboxymethyl Cellulose Supported Triethylenetetramine as a Catalyst for Knoevenagel Condensation[J]. Chinese Journal of Applied Chemistry, 2003, 20(1): 89-91.
Citation: LI Yi-Qun, ZHOU Mei-Yun, XU Xin-Ming, OU Yi-Qun. Carboxymethyl Cellulose Supported Triethylenetetramine as a Catalyst for Knoevenagel Condensation[J]. Chinese Journal of Applied Chemistry, 2003, 20(1): 89-91.
羧甲基纤维素支载三亚乙基四胺催化Knoevenagel反应
摘要:
Knoevenagel反应是合成碳碳双键的重要方法。一般采用氨、胺及其盐作催化剂。近年来又有用TiCl4[1],AlPO4-Al2O3[2],ZnCl2[3],KF[4],LiCl[5],K3PO4[6],氯化三乙基苄铵(TEBA)[7]和溴化三甲基十六烷基铵(CTMAB)/H2O[8]等作催化剂催化Knoevenagel反应的报道。
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关键词:
- 羧甲基纤维素支载三亚乙基四胺
- / 催化
- / Knoevenagel反应
- / 烯烃
English
Carboxymethyl Cellulose Supported Triethylenetetramine as a Catalyst for Knoevenagel Condensation
Abstract:
The Knoevenagel reaction of aromatic aldehydes with malononitrile and ethyl cyanoacetate proceeds smoothly in the presence of carboxymethyl cellulose supported triethylenetetramine as catalyst in the 95% ethanol to afford the desired E-isomers of the corresponding alkenes in yield of 74%~96% and good purity. The results confirm that the catalyst can offer definite advantages of good activity, easy separation, mild reaction condition and high yields. Moreover, it can be reused for not less than 5 runs.
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