736-30-1Relevant academic research and scientific papers
Single Electron Transfer Reactions of the Ambident Anion of 2-Cyano-3-ethyl-1-methyl-Δ3-piperideine
Grierson, David,Urrea, Miguel,Husson, Henri-Phillippe
, p. 891 - 893 (1983)
The reaction of the ambident anion (2) derived from 2-cyano-3-ethyl-1-methyl-Δ3-piperideine (1) with t-butyl halides and p-NO2C6H4CH2X led to formation of the C-2 product (3) and the C-4 product (6) respectively via a probable single electron transfer reaction; dimerization of anion (2) gave dimers (8), (9), and (10) by electron transfer to m-dinitrobenzene, I2, and 2-methyl-2-nitropropane.
Deoxygenation of Ethers to Form Carbon-Carbon Bonds via Nickel Catalysis
Cao, Zhi-Chao,Shi, Zhang-Jie
, p. 6546 - 6549 (2017)
In this article a successful protocol was developed to construct carbon-carbon bonds by the extrusion of the O atom of ethers via nickel catalysis in the presence of reductants. This methodology is featured as a highly economic route to construct sp3-sp3 C-C bonds through dual C-O activation of ethers with good functional group tolerance.
Picosecond and Nanosecond Laser Photolyses of p-Nitrophenylacetate in Aqueous Media. A Photoadiabatic Decarboxylation Process?
Craig, Bruce B.,Weiss, Richard G.,Atherton, Stephen J.
, p. 5906 - 5912 (1987)
Employing UV picosecond (266 nm, 22 ps, ca. 0.5 mJ) and nanosecond (266 nm, 12 ns, 0.5-5 mJ) excitation, we have investigated the dynamics of the photodecarboxylation of p-nitrophenylacetate anions in aqueous solution.In agreement with previous micosecond flash photolysis studies, we believe that the primary decarboxylation products are the p-nitrobenzyl anion and carbon dioxide.It is proposed that the anion is produced in its triplet state following photoadiabatic cleavage of the lowest n,?* triplet state of p-nitrophenylacetate.The triplet state of the anion is observed as an intermediate (λmax ca. 290 nm) of lifetime 90 ns (pH > 5.0).In methanol/water and acetonitrile/water mixtures, its lifetime is found to increase as the aqueous portion of the solvent is decreased.A reaction mechanism is developed.
Preparation method 4-4' -dinitrobibenzyl
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Paragraph 0044-0066, (2021/11/14)
The invention discloses a novel method for preparing 4-4’ -dinitrobibenzyl. The method uses p-nitrotoluene as reactant, oxygen is oxidant, ethanol is solvent, the transition metal-doped FDU - 12 mesoporous molecular sieve supported guanidine salt ionic liquid is used as a catalyst, 4, 4' -dinitrobibenzyl is prepared through high-selectivity oxidative dehydrogenation coupling reaction. After completion of the reaction, the catalyst is easily separated from the product phase and can be recycled well. The method has the advantages of simple operation. The method has the advantages of mild reaction conditions, less catalyst consumption, high reaction efficiency and selectivity, less waste of three wastes, and is a novel green cleaning preparation method.
Palladium and Nickel Catalyzed Suzuki Cross-Coupling with Alkyl Fluorides
Balaraman, Kaluvu,Wolf, Christian
supporting information, p. 8994 - 8999 (2021/11/20)
Suzuki cross-coupling of benzylic and unactivated aliphatic fluorides with aryl- and alkenylboronic acids has been achieved via mechanistically distinct Pd and Ni catalyzed pathways that outperform competing protodeboronation, β-hydride elimination, and h
Diphenyl ethane diisocyanate and preparation method thereof
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Paragraph 0036, (2020/04/29)
The invention discloses diphenyl ethane diisocyanate and a preparation method thereof, and relates to the technical field of high molecular material monomer preparation. The diphenylethane diisocyanate has a structure shown in the specification, wherein R is H or alkyl, and a substituent R is positioned at a 2 (2') site or a 3 (3') site; substituent -NCO is located at a 4 (4') site or a 5 (5') site or a 6 (6') site; EDI serves as a polyurethane monomer to be applied to polyurethane materials and comprises polyurethane foam, a polyurethane adhesive, polyurethane synthetic leather, a polyurethane fabric coating layer, a polyurethane resin coating, a polyurethane elastomer and other synthetic materials.
The electrochemical behavior of 4-nitrobenzyl bromide and its catalytic activity for reduction of CO2 in the acetonitrile solvent at the Cu/Pd/rGO/GCE surface
Benvidi, Ali,Ghobadi, Kobra,Khoshro, Hossein,Mohammadzadeh, Safoora,Zare, Hamid R.
, (2020/06/02)
In this study, 4-nitrobenzyl bromide was used as a catalyst for reduction of CO2 and as an initial substrate for electrosynthesis of 4-nitrophenylacetic acid. Cu nanoparticles/Pd nanoparticles/reduced graphene oxide nanocomposite modified glassy carbon electrode (Cu/Pd/rGO/GCE) was used to promote electroactivation of CO2. rGO film was fabricated via electrochemical reduction of dispersed GO nanosheets on the GCE surface. Cyclic voltammetry procedure was applied in two steps to deposit Pd and Cu nanoparticles on the rGO/GCE surface. The morphology and structure of the nanocomposites were characterized using FESEM, EDS, AFM and XRD analysis. FTIR, 1H and 13C NMR spectral characteristics were used to identify the final products of the catalytic process. The electrocarboxylation of 4-nitrobenzyl bromide occurs at a potential which is less negative than those reported for other aryl halides. The results indicate that 4-nitrobenzyl bromide, as a catalyst, plays a dual role in the electrosynthesis of 4-nitrophenylacetate. The dual role includes the electrocatalytic reduction of CO2 and reaction of produced CO2 ?? with 4-nitrobenzyl bromide radical anion. Finally, an EC'C mechanism is proposed for the electrosynthesis of 4-nitrophenylacetate.
Novel preparation of N-arylmethyl-N-arylmethyleneamine N-oxides from benzylic bromides with zinc and isobutyl nitrite
Yanai, Kei,Togo, Hideo
, p. 3523 - 3529 (2019/05/24)
Treatment of benzylic bromides with Zn and LiCl, followed by the reaction with i-butyl nitrite gave N-arylmethyl-N-arylmethyleneamine N-oxides in moderate yields. The present reaction is a novel and simple method for the preparation of nitrones from benzylic bromides, although the yields are moderate.
Dual copper- and photoredox-catalysed C(sp2)-C(sp3) coupling
McLean, Euan B.,Gauchot, Vincent,Brunen, Sebastian,Burns, David J.,Lee, Ai-Lan
supporting information, p. 4238 - 4241 (2019/04/30)
The use of copper catalysis with visible light photoredox catalysis in a cooperative fashion has recently emerged as a versatile means of developing new C-C bond forming reactions. In this work, dual copper and photoredox catalysis is exploited to effect C(sp2)-C(sp3) cross-couplings between aryl boronic acids and benzyl bromides.
Perylene-Grafted Silicas: Mechanistic Study and Applications in Heterogeneous Photoredox Catalysis
Carrillo, Adela I.,Elhage, Ayda,Marin, M. Luisa,Lanterna, Anabel E.
supporting information, p. 14928 - 14934 (2019/12/02)
A mechanistic study is herein presented for the use of heterogeneous photocatalysts based on perylene moieties. First, the successful immobilization of perylene diimides (PDI) on silica matrices is demonstrated, including their full characterization by means of electronic microscopy, surface area measurements, powder XRD, thermogravimetric analysis, and FTIR, 29Si and 13C solid-state NMR, fluorescence, and diffuse reflectance spectroscopies. Then, the photoredox activity of the material was tested by using two model reactions, alkene oxidation and 4-nitrobenzylbromide reduction, and mechanistic studies were performed. The mechanistic insights into their photoredox activity show they have promising dual photocatalytic activity for both organic oxidations and reductions.
