141377-54-0Relevant articles and documents
Rapid microwave-assisted Henry reaction in solvent-free processes
Gan, Changsheng,Chen, Xing,Lai, Guoyin,Wang, Zhiyong
, p. 387 - 390 (2006)
The solvent-free Henry reactions of nitromethane with a series of carbonyl compounds were studied under microwave irradiation. By using different bases and Lewis acids, the solvent-free nitroaldol reaction of aldehydes were realized under microwave condition, affording the corresponding adducts with high yields. Particularly, aliphatic ketones, which were hardly carried out this reaction, could be the reaction substrates in the nitroaldol reactions by employment of 1,4-diazabicyclo[2.2.2]octane (DABCO) under a similar conditions, giving the corresponding adducts with moderate to good yields. Georg Thieme Verlag Stuttgart.
Activation of nitroaldol reactions by diethylzinc and amino alcohols or diamines as promoters
Klein, Günter,Pandiaraju, Subramaniam,Reiser, Oliver
, p. 7503 - 7506 (2002)
Henry reactions of nitroalkanes can be initiated with diethylzinc in the presence of catalytic amounts of 1,2-aminoethanol or 1,2-diaminoethane.
Indium-catalyzed henry-type reaction of aldehydes with bromonitro-alkanes
Soengas, Raquel G.,Silva, Artur M. S.
, p. 873 - 876 (2012)
An economical method to perform the addition of bromonitroalkanes to aldehydes using zinc in the presence of a catalytic amount of indium is established. This procedure affords the corresponding nitroalkanols in good yields and can be easily scaled up to
Urea-pyridine bridged periodic mesoporous organosilica: An efficient hydrogen-bond donating heterogeneous organocatalyst for Henry reaction
Borah, Parijat,Mondal, John,Zhao, Yanli
, p. 129 - 134 (2015)
Hydrogen-bond donating (HBD) organocatalysts have been employed as an important class of catalysts for the activation of small molecules. However, the use of these catalysts was restricted on account of the self-aggregation of HBD-active species. In this work, a successful approach was developed to construct novel urea-pyridine bridged periodic mesoporous organosilica (PMO) to prevent the unwanted self-recognition and aggregation of urea-based catalytic center by spatial isolation, unleashing its HBD organocatalytic activity along with cooperative effect from the pyridine unit for efficient Henry reaction. The urea-pyridine bridged PMO catalyst presents high structural stability and high catalytic recyclability.
Mg-NHC complex on the surface of nanomagnesium oxide for catalytic application
Shaikh, Melad,Sahu, Mahendra,Gavel, Pramod Kumar,Turpu, Goverdhan Reddy,Khilari, Santimoy,Pradhan, Debabrata,Ranganath, Kalluri V.S.
, p. 89 - 92 (2016)
We have developed a simple and eco-friendly protocol for the synthesis of Mg-NHC complexes. The Mg-NHC complex is prepared by reacting nano-MgO with imidazolium salts. Thus prepared Mg-NHC complex has been realized in two divergent reactions one in C-C bond formation and other in dehydration reaction. Further, the Mg-NHC catalyst has been characterized by SEM, TEM, XPS, Raman Spectroscopy and XRD analysis.
Aqua-aminoorganoboron catalyst: Engineering single water molecule to act as an acid catalyst in nitro aldol reaction
Yoshimoto, Junichi,Sandoval, Christian A.,Saito, Susumu
, p. 1294 - 1295 (2008)
We have disclosed the catalytic potential hidden behind a series of aqua-aminoorganoboron compounds in the formation and reaction of nitronate species. The pivotal role of a single-coordinated water molecule in the catalyst was demonstrated by comparison
Synthesis, crystal structure and catalytic properties of 3d supramolecular complex [Zn(AMPy)2(OAc)]2[Zn(OAc)4]·2H2O with water clusters (AMPy = 2-(aminomethyl)pyridine)
Liu, Chao,Wang, Dai-Lan,Zhang, Li-Li,Liu, Xin-Hua
, p. 2553 - 2556 (2015)
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Dendronized piperidine: Highly effective and recyclable catalysts for Henry reaction
Yi, Bing,Yin, Yanyan,Yi, Ziqi,Zhou, Wei,Liu, Haitao,Tan, Nianyuan,Yang, Hai
, p. 2320 - 2323 (2016)
Two types of dendronized tertiary amines were synthesized by attaching piperidine to the core of a Fréchet-type dendrimer or to the end of an alkyl chain that is linked to the dendritic core. The relationship between structure and property of the catalysts in the Henry reaction of 2-nitrobenzaldehyde and nitromethane was established. It was observed that the attachment of piperidine to the dendritic sector by using a hexamethylene chain effectively avoids the scenario of dendritic shell encapsulation. And the 4-G3′ catalyst of third-generation with dendritic link exhibits excellent catalytic performance, and can be recycled ten times without a significant loss of activity.
Electrochemically induced Henry reaction of nitromethane and carbonyl compounds
Elinson, Michail N.,Ilovaisky, Alexey I.,Merkulova, Valentina M.,Barba, Fructuoso,Batanero, Belen
, p. 5915 - 5919 (2008)
The electrolysis of carbonyl compounds and nitromethane in methanol or in the mixture of methanol and DMF in an undivided cell results in the formation of corresponding β-nitroalcohols in 60-75% yields. Thus, the simple electrocatalytic system can produce
Enantiomeric Resolution of Asymmetric-Carbon-Free Binuclear Double-Stranded Cobalt(III) Helicates and Their Application as Catalysts in Asymmetric Reactions
Arunachalam, Rajendran,Chinnaraja, Eswaran,Valkonen, Arto,Rissanen, Kari,Sen, Shovan K.,Natarajan, Ramalingam,Subramanian, Palani S.
, p. 11414 - 11421 (2018)
A series of double-stranded binuclear helicates [Co2(H1)2]4+, [Co2(H2)2]4+, and [Co2(H3)2]4+, derived from monodeprotonated bis-pyridyl hydrazine-based liga
Chemoselective Henry reaction catalyzed by electro-generated base
Saraswat,Sharma,Singh,Siddiqui,Singh
, p. 1393 - 1399 (2013)
Chemoselective synthesis of 2-nitroalkanols catalyzed by electro-generated base (EGBs) in the presence of acetonitrile and lithium perchlorate has been studied by cyclic voltammetry and controlled potential electrolysis techniques. Cathodic reduction of nitromethane at platinum cathode produces organic anion which acts as EGBs and undergoes condensation with carbonyl group of substituted aldehydic substrate to produce 2-nitroalkanols in 75-85 % yields. The controlled nucleophilicity of EGBs in organic solvent during electrochemical reaction makes it chemoselective which is a unique feature of this work.
Cu6S6 Clusters as a Building Block for the Stabilization of Coordination Polymers with NiAs, NaCl, and Related Structures: Synthesis, Structure, and Catalytic Studies
Jana, Ajay Kumar,Natarajan, Srinivasan
, p. 739 - 750 (2018)
Four new three-dimensional heterometallic coordination polymers (CPs), [{Zn3(Hen)(OH)}{Cu6(6-mna)6}·(H2O)6] (I), [{Zn2(OH)(en)}{Cu6(6-mna)6}0.5·(H2/su
Revisit to Henry reaction by non conventional heterogeneous and efficient catalyst for nitroalcohol synthesis
Jadhav, Swati D.,Patil, Rupesh C.,Jagdale, Ashutosh A.,Patil, Suresh S.
, p. 593 - 606 (2021/11/03)
A sustainable, green and efficient process for the synthesis of 2-nitro alcohol derivatives from different substituted aromatic aldehydes with nitroalkane by stirring at ambient temperature with high product yield is reported. Adoption of very mild reaction conditions, use of Calcined Eggshell (CES) as natural catalyst and simple workup are expected to contribute to the development of environmentally benign synthetic method for Henry (nitroaldol) reaction. CES is ecologically safe, inexpensive, and attractive heterogeneous base catalyst obtained from renewable resources, thus opening a new perspective for this process. Graphical abstract: [Figure not available: see fulltext.]
Nitration of Alkenes and Oxiranes with Nitrogen(IV) Oxide in Liquid and Supercritical Carbon Dioxide Media
Ivanov, R. E.,Zharkov, M. N.,Zlotin, S. G.
, p. 209 - 212 (2022/02/22)
Abstract: For the first time the reactions of radical nitration of alkenes and oxiranes with nitrogen dioxide in the liquid and supercritical carbon dioxide (sc-CO2) media were carried out. Using octene-1, styrene, and their derivatives as exam
