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Ultrasound Promoted Synthesis of Arylmethylenemalonitriles Catalyzed by Melamine
Liu, Qing1,2; Ai, Hong Mei3
2016-06-01
Source PublicationJOURNAL OF THE CHEMICAL SOCIETY OF PAKISTAN
ISSN0253-5106
Volume38Issue:3Pages:565-569
Abstract

Arylmethylenemalonitriles were synthesized in the presence of melamine through the Knoevenagel condensation of aldehydes with malononitrile in ethanol. Two strategies such as the conventional stirring and ultrasound-assisted method were performed in this work, and improvements were observed by carrying out the reactions under ultrasound irradiation. The effect of frequency and power of ultrasound on the yields was investigated, and the optimum frequency and power was 45 kHz and 240 W, respectively. The Knoevenagel reaction was carried out smoothly under the optimum conditions with the yields of 80-99% within short time. The melamine catalyst showed high activity and reusability, and exhibited no substantial loss of activity over up to four reaction cycles. This work demonstrated that short reaction times and high yields of arylmethylenemalonitriles can be obtained with the facile operation in the presence of the low-toxic, cheap and reusable melamine catalyst.

KeywordArylmethylenemalonitriles Melamine Ultrasound Catalysis
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS KeywordFREE KNOEVENAGEL CONDENSATION ; SOLID-BASE CATALYST ; REACTION SYSTEM ; EFFICIENT ; SOLVENT ; WATER
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000381933700025
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21452
Collection多相复杂系统国家重点实验室
Affiliation1.Shandong Univ Sci & Technol, Key Lab Low Carbon Energy & Chem Engn, Qingdao 266590, Shandong, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
3.Shandong Univ Sci & Technol, Dept Econ & Management, Tai An 271021, Shandong, Peoples R China
Recommended Citation
GB/T 7714
Liu, Qing,Ai, Hong Mei. Ultrasound Promoted Synthesis of Arylmethylenemalonitriles Catalyzed by Melamine[J]. JOURNAL OF THE CHEMICAL SOCIETY OF PAKISTAN,2016,38(3):565-569.
APA Liu, Qing,&Ai, Hong Mei.(2016).Ultrasound Promoted Synthesis of Arylmethylenemalonitriles Catalyzed by Melamine.JOURNAL OF THE CHEMICAL SOCIETY OF PAKISTAN,38(3),565-569.
MLA Liu, Qing,et al."Ultrasound Promoted Synthesis of Arylmethylenemalonitriles Catalyzed by Melamine".JOURNAL OF THE CHEMICAL SOCIETY OF PAKISTAN 38.3(2016):565-569.
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