4309-66-4

Usage

Safety Profile

Questionable carcinogen withexperimental carcinogenic and tumorigenic data.Experimental reproductive effects. Mutation datareported. When heated to decomposition it emits toxicfumes of NOx.

Upstream product

• 1694-20-8 4-nitrostilbene 
• 140-29-4 phenylacetonitrile 
• 7647-01-0 hydrogenchloride 
• 1694-20-8 trans-4-nitrostilbene 
• 64-19-7 acetic acid 
• 100-42-5 styrene 
• 540-37-4 p-aminoiodobenzene 
• 106-47-8 4-chloro-aniline 
• 100-52-7 benzaldehyde 
• 100-11-8 1-bromomethyl-4-nitro-benzene 
• 636-98-6 p-nitrobenzene iodide 
• 246177-84-4 1-azido-4-styrylbenzene 
• 834-24-2 4-[(1Z)-2-phenylethenyl]benzeneamine 
• 106-40-1 4-bromo-aniline 

Downstream Products

• 95081-69-9 stilben-4-yl-hydrazine 
• 14275-93-5 N-(2-morpholin-4-yl-ethyl)-4-styryl-aniline 
• 14983-09-6 N-4-Stilbenyl-trifluoracetamid 
• 106550-90-7 Benzoimidazol-1-ylmethyl-[4-((E)-styryl)-phenyl]-amine 
• 106550-89-4 3-{[4-((E)-Styryl)-phenylamino]-methyl}-3H-benzooxazol-2-one 
• 106573-18-6 3-{[4-((E)-Styryl)-phenylamino]-methyl}-3H-benzooxazole-2-thione 
• 106550-91-8 1,3-Bis-{[4-((E)-styryl)-phenylamino]-methyl}-1,3-dihydro-benzoimidazole-2-thione 
• 106550-93-0 5-Methyl-3-[(Z)-4-((E)-styryl)-phenylimino]-1,3-dihydro-indol-2-one 
• 106550-95-2 1-Methyl-3-[(Z)-4-((E)-styryl)-phenylimino]-1,3-dihydro-indol-2-one 
• 106550-92-9 5-Chloro-1,3-bis-{[4-((E)-styryl)-phenylamino]-methyl}-1,3-dihydro-benzoimidazole-2-thione 
• 106550-96-3 1,5-Dimethyl-3-[(Z)-4-((E)-styryl)-phenylimino]-1,3-dihydro-indol-2-one 
• 106550-97-4 5-Chloro-1-methyl-3-[(Z)-4-((E)-styryl)-phenylimino]-1,3-dihydro-indol-2-one 
• 106573-19-7 3-[(Z)-4-((E)-Styryl)-phenylimino]-1,3-dihydro-indol-2-one 
• 106550-94-1 5-Chloro-3-[(Z)-4-((E)-styryl)-phenylimino]-1,3-dihydro-indol-2-one 

Relevant academic research and scientific papers

Novel 1,3,5-triazinyl aminobenzenesulfonamides incorporating aminoalcohol, aminochalcone and aminostilbene structural motifs as potent anti-vre agents, and carbonic anhydrases i, ii, vii, ix, and xii inhibitors

A series of 1,3,5-triazinyl aminobenzenesulfonamides substituted by aminoalcohol, ami-nostilbene, and aminochalcone structural motifs was synthesized as potential human carbonic an-hydrase (hCA) inhibitors. The compounds were evaluated on their inhibition

Heterobimetallic Pd/Mn and Pd/Co complexes as efficient and stereoselective catalysts for sequential Cu-free Sonogashira coupling–alkyne semi-hydrogenation reactions

A series of heterobimetallic PdII/MII complexes (MII = Mn, Co) were synthesised and tested as precatalysts for sequential Sonogashira coupling–alkyne semi-hydrogenation reactions to form Z-aryl alkenes. The carbometalated heterobimetallic PdII/CoII complex CoPdL3′ demonstrated an apparent cooperative effect compared to the corresponding monometallic counterparts. This compound was identified as a potent single-molecule catalyst for the one-pot Cu-free Sonogashira coupling of aryl bromides with terminal alkynes followed by chemo- and stereoselective semi-hydrogenation of the alkyne intermediate using NH3·BH3 as a hydrogen source. Furthermore, different aromatic substrates have been tested to show the generality of the reaction for the synthesis of Z-alkenes, including biologically active combretastatin A-4. In addition, the homogeneous nature of the catalytically active species was demonstrated.

Mizoroki-Heck carbon-carbon cross-coupling reactions by water-soluble palladium (II) complexes in neat water

Water-soluble palladium complexes were synthesized, characterized, tested as (pre)catalyst for Mizoroki-Heck carbon-carbon cross-coupling reactions in water. Cross-coupling of aryl iodides and bromides with methyl and ethyl acrylates was achieved at 140 °

Palladium Loaded Dendronized Polymer as Efficient Polymeric Sustainable Catalyst for Heck Coupling Reaction

The palladium incorporated amine-functionalized dendronized polymer was synthesized by the addition of palladium acetate to dendronized polymer in methanol at room temperature. Palladium species are immobilized onto the dendritic structure by their coordination with amino functional groups. The newly developed dendritic system showed high palladium content in the low generation level itself, which was found to be 4.19?mmol/g. This was fairly higher than, the other palladium-based catalysts. Energy dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, UV–Visible spectroscopy, and X-ray photoelectron spectroscopy were used to confirm the successful synthesis of the new catalyst. It was used as a homogeneous palladium catalyst for Heck coupling reaction between olefins and differently substituted aryl halides and the products were isolated in high yield. The products isolated were in trans configuration, which indicated the selectivity of the newly developed catalytic system. Also, this catalyst system was reused up to nine times without a significant decrease in its catalytic activity. The easy accessibility of catalytic sites, stability, resistance to metal leaching, high catalytic activity and remarkable stereoselectivity with a low amount of catalyst are all due to the dendritic support. The docking study was carried out for all the stilbene derivatives obtained by the Heck coupling reaction against DprE1 protein to study its potential antitubercular activity. All the compounds displayed superior docking score values over the range ??6.5 to ??8.2?kcal/mol, compared to the standard drug isoniazid with docking score of ??6.1?kcal/mol against DprE1. Graphic Abstract: [Figure not available: see fulltext.]

Chemoselective Hydrogenation of Nitroarenes Using an Air-Stable Base-Metal Catalyst

The reduction of nitroarenes to anilines as well as azobenzenes to hydrazobenzenes using a single base-metal catalyst is reported. The hydrogenation reactions are performed with an air-and moisture-stable manganese catalyst and proceed under relatively mild reaction conditions. The transformation tolerates a broad range of functional groups, affording aniline derivatives and hydrazobenzenes in high yields. Mechanistic studies suggest that the reaction proceeds via a bifunctional activation involving metal-ligand cooperative catalysis.

Cyclic (Alkyl)(amino)carbene Ligand-Promoted Nitro Deoxygenative Hydroboration with Chromium Catalysis: Scope, Mechanism, and Applications

Transition metal catalysis that utilizes N-heterocyclic carbenes as noninnocent ligands in promoting transformations has not been well studied. We report here a cyclic (alkyl)(amino)carbene (CAAC) ligand-promoted nitro deoxygenative hydroboration with cost-effective chromium catalysis. Using 1 mol % of CAAC-Cr precatalyst, the addition of HBpin to nitro scaffolds leads to deoxygenation, allowing for the retention of various reducible functionalities and the compatibility of sensitive groups toward hydroboration, thereby providing a mild, chemoselective, and facile strategy to form anilines, as well as heteroaryl and aliphatic amine derivatives, with broad scope and particularly high turnover numbers (up to 1.8 × 106). Mechanistic studies, based on theoretical calculations, indicate that the CAAC ligand plays an important role in promoting polarity reversal of hydride of HBpin; it serves as an H-shuttle to facilitate deoxygenative hydroboration. The preparation of several commercially available pharmaceuticals by means of this strategy highlights its potential application in medicinal chemistry.

NiFe2O4@SiO2@ZrO2/SO42-/Cu/Co nanoparticles: A novel, efficient, magnetically recyclable and bimetallic catalyst for Pd-free Suzuki, Heck and C-N cross-coupling reactions in aqueous media

The novel heterogeneous bimetallic nanoparticles of Cu-Co were synthesized based on magnetic nanoparticles, and the magnetic nanocatalyst was characterized by XRD, FE-SEM, EDX mapping, BET, TEM, HRTEM, FTIR, TGA, and VSM. This catalyst was successfully applied as a recyclable magnetically catalyst in Heck, Suzuki, and C-N cross-coupling reactions with various aryl halides (iodides, bromides, and chlorides as challengeable substrates), with olefins, phenylboronic acid, and amines, respectively. We considered the rise of synergetic effects from the different Lewis acid and Br?nsted acid sites present in the catalyst. The catalyst was synthesized with cheap, available materials and a simple synthesis method. The catalyst can be separated easily using an external magnet. It was recycled for more than ten runs without a sensible loss of its catalytic activity, and no significant leaching of the Cu and Co quantity was observed. The significant benefits of the method are high-level generality, simple operation, and there are no heavy metals and toxic solvents. This is a quick, easy, efficacious and environmentally friendly protocol, and no by-products are formed in the reaction. These features make it an appropriate practical alternative protocol. In comparison with recent works, the other advantage of this catalyst is the synthesis of a wide variety of C-C and C-N bond derivatives (more than 40 derivatives). The other significant advantage is the low temperature of the reaction and the use of the least possible amount of the catalyst (0.003 g). The efficiency was good to excellent and the catalyst selectivity has been high. We aspire that our study inspires more interest to design novel catalysts based on using low-cost metal ions (such as cobalt and copper) in the cross-coupling reactions. This journal is

Method for preparing amine through catalytic reduction of nitro compound by cyclic (alkyl) (amino) carbene chromium complex

The cyclic (alkyl) (amino) carbene chromium complex is prepared from corresponding ligand salt, alkali and CrCl3 and used for catalyzing pinacol borane to reduce nitro compounds in an ether solvent under mild conditions to generate corresponding amine. The method for preparing amine has the advantages of cheap and accessible raw materials, mild reaction conditions, wide substrate application range, high selectivity and the like, and is simple to operate.

COPPER NANOPARTICLE BASED CHEMOSELECTIVE REDUCTION

The instant invention provides processes for a chemo selective reduction of a nitro group within a compound in the presence of other groups which can also be reduced. This aspect of the present invention provides an ammonia borane (AB) initiated chemoselective reduction process of a nitro group contained within a compound in the presence of a copper (Cu) nanoparticle based catalyst. The invention is also directed to Copper (Cu) nanoparticle (NP) based catalysts, selected from Cu/WOx, Cu/SiO2, and Cu/C; wherein x represents an integer having a value of from about 2 to about 3.5, used in the chemo selective reduction of a nitro group contained within a compound in the presence of other groups which can also be reduced.

Effect of the Linking Group on the Thermoelectric Properties of Poly(Schiff Base)s and Their Metallopolymers

As polymer-based thermoelectric (TE) materials possess attractive features such as light weight, flexibility, low toxicity and ease of processibility, an increasing number of conducting polymers and their composites with high TE performances have been developed in recent years. Up to date, however, the research focusing on the structure-performance relationship remains rare. In this paper, two series of poly(Schiff base)s with either C=C or C≡C linker and their metallopolymers were synthesized and doped with single-walled carbon nanotubes to evaluate how the linking groups affected the TE properties of the resulting composites. Apart from the effect exerted by the morphology, experimental results suggested that the linkers played a key role in determining the band gaps, preferred molecular conformation and extent of conjugation of the polymers, which became key factors that influenced the TE properties of the resulting materials. Additionally, upon coordination with transition metal ions, the TE properties could be tuned readily.