14533-85-8Relevant academic research and scientific papers
Nitrogen-containing ionic liquids: Biodegradation studies and utility in base-mediated reactions
Ford, Leigh,Ylijoki, Kai E.O.,Garcia, M. Teresa,Singer, Robert D.,Scammells, Peter J.
, p. 849 - 857 (2015)
Several ionic liquids (ILs) were prepared in order to study the susceptibility of various cores and substituents to biodegradability using the 'CO2 headspace' test (ISO 14593). Several of the ILs contained tertiary amine substituents and were tested as solvents and reagents for several base mediated processes including Suzuki-Miyaura, Sonogashira, Knoevenagel, and Morita-Baylis-Hilman reactions. It was found that although these ILs contain basic functionality, they do not promote base mediated reactions. Density functional theory molecular calculations confirmed that the protonation of these ILs is energetically unfavourable. Journal compilation
Microporous polyurethane material for size selective heterogeneous catalysis of the Knoevenagel reaction
Dey, Sandeep Kumar,De Sousa Amadeu, Nader,Janiak, Christoph
, p. 7834 - 7837 (2016)
The first polyurethane material which is microporous (BET surface area of 312 m2 g-1) is prepared by solvothermal synthesis and acts as highly efficient and recyclable heterogeneous catalyst in the Knoevenagel condensation showing si
Dicalcium phosphate dehydrate DCPD as a highly efficient and reusable catalyst for Knoevenagel condensation
Benzekri, Zakaria,El Mejdoubi, Khalid,Boukhris, Said,Sallek, Brahim,Lakhrissi, Brahim,Souizi, Abdelaziz
, p. 442 - 451 (2016)
We have described the catalytic activities of dicalcium phosphate dihydrate (DCPD) in the condensation reaction of various substituted benzaldehydes with active methylene compound malononitrile. The influences of reaction conditions on the corresponding c
Synthesis, characterization and application of α-Ca3 (PO4)2 as a heterogeneous catalyst for the synthesis of 2.3-diphenylquinoxaline derivatives and knoevenagel condensation under green conditions
Anahmadi, Haddou,Benzekri, Zakaria,Boukhris, Said,El hajri, Fatima,El youbi, Mohamed Salahdine,Fathi, Majda,Idrissi, Brahim Chafik El,Sibous, Sarra,Souizi, Abdelaziz
, (2022)
Green chemistry is now paramount in modern life and industrial sector. It has become a research priority and a scientific challenge. In this study, alpha-tricalcic phosphate was prepared as a green catalytic medium. This medium has been characterized by v
A reinforced Pickering emulsion for cascade reactions
Xue, Nan,Zhang, Gaihong,Zhang, Xiaoming,Yang, Hengquan
, p. 13014 - 13017 (2018)
Based on an interfacial sol-gel process, a novel reinforced Pickering emulsion has been developed successfully for one-pot cascade reactions involving incompatible catalysts.
The first electrocatalytic stereoselective multicomponent synthesis of cyclopropanecarboxylic acid derivatives
Vereshchagin, Anatoly N.,Elinson, Michail N.,Egorov, Mikhail P.
, p. 98522 - 98526 (2015)
The one-pot electrocatalytic domino transformation of aldehydes and two different C-H acids-alkyl cyanoacetate and dialkyl malonate in the presence of sodium bromide-sodium acetate as a double mediatory system in alcohol in an undivided cell (simple beake
Polyguanidine as a highly efficient and reusable catalyst for knoevenagel condensation reactions in water
Zhao, Xian-Liang,Yang, Ke-Fang,Liu, Xuan-Gan,Ye, Chun-Lin,Xu, Li-Wen,Lai, Guo-Qiao
, p. 500 - 504 (2013)
Polyguanidine is used as a novel and highly efficient catalyst in the Knoevenagel reaction of aldehydes with active methylene compounds in water to afford substituted electrophilic alkenes. This method is applicable for a wide range of aldehydes including
Highly Active Copper(I)-Chalcogenone Catalyzed Knoevenagel Condensation Reaction Using Various Aldehydes and Active Methylene Compounds
Mannarsamy, Maruthupandi,Prabusankar, Ganesan
, (2021/10/05)
First copper(I) chalcogenones catalysed Knoevenagel Condensation reactions have been reported. No illustration of the utilization of this copper-chalcogenone complex class in Knoevenagel Condensation catalysis can be found. Thus, copper(I) bis(benzimidazole-2-chalcogenone) catalysts [Cu(L1)4]+BF4? (1) and [Cu(L2)4]+BF4? (2) (L1 = bis(1-isopropyl-benzimidazole-2-selone)-3-ethyl; L2 = bis(1-isopropyl-benzimidazole-2-thione)-3-ethyl) have been utilized as catalysts in the Knoevenagel Condensation reactions. These copper(I) chalcogenone catalysts have shown high efficiency for the catalytic Knoevenagel Condensation of aryl aldehydes and active methylene compounds. In particular, complex 2, exhibit the best catalytic activities. The scope of the catalytic reactions has been investigated with 22 different molecules. The excellent catalytic activity has been depicted for various types of substrates with either electron-rich or deficient aryl aldehydes. The present investigation features relatively mild reaction conditions with good functional group tolerance and excellent yields. Graphic Abstract: The first copper(I)-chalcogenone complexes catalysed Knoevenagel Condensation reactions?have also been investigated, and revealed the best catalytic activities. [Figure not available: see fulltext.]
Bis [hydrazinium (1+)] hexafluoridosilicate:(N2H5)2SiF6 novel hybrid crystal as an efficient, reusable and environmentally friendly heterogeneous catalyst for Knoevenagel condensation and synthesis of biscoumari
El hajri, Fatima,Benzekri, Zakaria,Sibous, Sarra,Ouasri, Ali,Boukhris, Said,Hassikou, Amina,Rhandour, Ali,Souizi, Abdelaziz
, (2021/02/03)
A simple, effective, green and nontoxic protocol was used for the Knoevenagel condensation and the biscoumarin derivatives synthesis. It have demonstrated that the use of a new hybrid crystal as a heterogeneous catalyst makes it possible to obtain several
Reductive Knoevenagel Condensation with the Zn-AcOH System
Ivanov, Konstantin L.,Melnikov, Mikhail Ya.,Budynina, Ekaterina M.
, p. 1285 - 1291 (2020/11/13)
An efficient gram-scale one-pot approach to 2-substituted malonates and related structures is developed, starting from commercially available aldehydes and active methylene compounds. The technique combines Knoevenagel condensation with the reduction of the C=C bond in the resulting activated alkenes with the Zn-AcOH system. The relative ease with which the C=C bond reduction occurs can be traced to the accepting abilities of the substituents in the intermediate arylidene malonates.
