2169-69-9Relevant articles and documents
Size control of catalytic reaction space by intercalation of alkylcarboxylate anions into Ni-Zn mixed basic salt interlayer: Application for knoevenagel reaction in water
Hara, Takayoshi,Kurihara, Jun,Ichikuni, Nobuyuki,Shimazu, Shogo
, p. 304 - 305 (2010)
The interlayer space of layered Ni-Zn mixed basic salt (NiZn) can be controlled precisely by the intercalation of various carboxylate anions with long alkyl chains via simple anion exchange. Expansion of interlayer space in the anion-exchanged NiZn depend
Preparation of Mesoporous Basic Oxides through Assembly of Monodispersed Mg–Al Layered Double Hydroxide Nanoparticles
Oka, Yuya,Kuroda, Yoshiyuki,Matsuno, Takamichi,Kamata, Keigo,Wada, Hiroaki,Shimojima, Atsushi,Kuroda, Kazuyuki
, p. 9362 - 9368 (2017)
Mesoporous basic Mg–Al mixed metal oxides (MMOs) with a high surface area and large pore size have been prepared through the assembly of monodispersed layered double hydroxide nanoparticles (LDHNPs) with block copolymer templates. The particle sizes of th
Nitrogen-containing porous cerium trimetaphosphimate as a new efficient base catalyst
Yi, Jianglong,Fu, Zhiyong,Liao, Shijun,Song, Desheng,Dai, Jingcao
, p. 6144 - 6147 (2011)
A new layer nitrogen-containing porous cerium trimetaphosphimate with pendant NH groups projecting into the channels has been synthesized and characterized. Knoevenagel condensation of benzaldehyde and ethyl cyanoacetate is carried out with this complex a
Amine-functionalized go as an active and reusable acid-base bifunctional catalyst for one-pot cascade reactions
Zhang, Fang,Jiang, Huangyong,Li, Xiaoyan,Wu, Xiaotao,Li, Hexing
, p. 394 - 401 (2014)
The amine-functionalized graphene oxide was prepared by a facile one-step silylation approach and used as an acid-base bifunctional catalyst in one-pot cascade reactions containing successive acetal hydrolysis and Knoevenagel condensation owing to the separate coexistence of original carboxylic acid on the edge of the GO sheet and the postgrafted amine groups on the GO basal surface. This catalyst exhibited much higher activity than either amine-functionalized active carbon, amine-functionalized SBA-15, or amine-functionalized Al2O3 due to the enriched surface acid sites and the diminished diffusion limitation as well as high catalyst dispersion in liquid solution due to the unique two-dimensional structure. More importantly, this catalyst could be easily recycled and used repetitively, showing potential application in industry.
2-pyrrolidinecarboxylic acid ionic liquid catalyzed knoevenagel condensation
Song, Hongbing,Yu, Yinghao,Chen, Xuewei,Li, Xuehui,Xi, Hongxia
, p. 666 - 669 (2012)
The pyrrolidinecarboxylic functionalized ionic liquid, 1-butyl-3- methylimidazolium-(S)-2-pyrrolidinecarboxylic acid salt ([bmim][Pro]), was prepared using an improved procedure. α,β-Unsaturated carbonyl compounds were selectively synthesized and high yie
Synthesis of α-Dawson-type silicotungstate [α-Si 2W18O62]8- and protonation and deprotonation inside the aperture through intramolecular hydrogen bonds
Minato, Takuo,Suzuki, Kosuke,Kamata, Keigo,Mizuno, Noritaka
, p. 5946 - 5952 (2014)
The design of structurally well-defined anionic molecular metal-oxygen clusters, polyoxometalates (POMs), leads to inorganic receptors with unique and tunable properties. Herein, an α-Dawson-type silicotungstate, TBA 8[α-Si2W18
Comparison of the alkalinity of hydroxypyridine anion-based protic ionic liquids and their catalytic performance for Knoevenagel reaction: The effect of the type of cation and the position of nitrogen atom of anion
Xie, Bin,Xu, Yingjie,Tang, Xiaochen,Shu, Hegang,Chen, Tingting,Zhu, Xiao
, p. 610 - 616 (2018)
The design of acidity and alkalinity is an important characteristic of ionic liquids, and it also affects their application. For this reason, the alkalinity of six hydroxypyridine anion-based protic ionic liquids (PILs) was determined by potentiometric ti
Continuous flow ZIF-8/NaA composite membrane microreactor for efficient Knoevenagel condensation
Zhang, Guangcai,Zhang, Tong,Zhang, Xiongfu,Yeung, King Lun
, p. 93 - 96 (2015)
A ZIF-8/NaA composite membrane microreactor was fabricated on multi-channel stainless steel plate. NaA zeolite membrane was first introduced into the microchannel as a modification layer via a secondary growth. Subsequently, a layer of ZIF-8 membrane was
Synthesis, structure, luminescence and catalytic properties of cadmium(ii) coordination polymers with 9H-carbazole-2,7-dicarboxylic acid
Yi, Xiu-Chun,Huang, Meng-Xuan,Qi, Yan,Gao, En-Qing
, p. 3691 - 3697 (2014)
Two Cd(ii) metal-organic frameworks were synthesized from the NH-functionalized dicarboxylate ligand 9H-carbazole-2,7-dicarboxylic acid (2,7-H2CDC). Compound 1, [Cd4(CDC)4(DMF) 4]·4DMF·4H2O, displays
Ammonium chloride catalyzed Knoevenagel condensation in PEG-400 as ecofriendly solvent
Waghmare, Smita R.
, p. 849 - 855 (2021/09/28)
A simple and selective green methodology has been successfully developed for Knoevenagel condensation in polyethylene glycol-400 using 10 mol % ammonium chloride as catalyst. The method is applicable to a wide range of aromatic, heteroaromatic and α,β-unsaturated aldehydes. The reactions have been found to be clean and free from the formation of the Michael adduct.
