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The trifluoromethylcarbene (:CHCF3) was found to be conveniently generated from (2,2,2-trifluoroethyl)diphenyl-sulfonium triflate (Ph2S+CH2CF3 -OTf), which was successfully applied in Fe-catalyzed cyclopropanation of olefins, giving the corresponding trifluoromethylated cyclopropanes in high yields.

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Iron Catalysis in Organic Synthesis | Chemical Reviews,
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The present invention discloses a synthetic alpha- the alkyl is fragrant acetamide method. In the reaction container, adding fragrant second grade nitrile, the compound is mellow, a transition metal catalyst complex of metal, alkali, and an organic solvent to the metallisation; or the microwave reactor the reaction mixture under stirring with magnetic force, 130 C after the reaction, cooling to room temperature, then through the column separation, to obtain a target compound. From nitrile and mellow of the present invention as a starting material, in the transition metal catalyst, with the participation of the metallisation and alkali, direct synthesis of alpha-alkyl benzene acetamide, reaction exhibit three significant advantages: 1) the use of commercial or easily prepared nitrile and almost non-toxic alcohol as the starting material; 2) reaction atom economy is high; therefore, the reaction in accordance with the requirement of green chemistry, has broad prospects of development. (by machine translation)

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Readily available alpha-amino aldehydes, incorporating a methylthiomethyl (MTM) protecting group on nitrogen, are shown to be efficient substrates in Rh-catalyzed alkyne hydroacylation reactions. The reactions are performed under mild conditions, employing a small-bite-angle bis-phosphine ligand, allowing for good functional group tolerance with high stereospecificity. Amino aldehydes derived from glycine, alanine, valine, leucine, phenylalanine, isoleucine, serine, tryptophan, methionine, and cysteine were successfully employed, as was an enantiomerically enriched alpha-OMTM-aldehyde derived from phenyllactic acid. The synthetic utility of the alpha-amino enone products is demonstrated in a short enantioselective synthesis of the natural product sphingosine.

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You could be based in a university, combining chemical research with teaching; in a pharmaceutical company, working on developing and trialing new drugs; Safety of 1,1′-Ferrocenedicarboxaldehyde, or in a public-sector research center, helping to ensure national healthcare provision keeps pace with new discoveries.In a article, mentioned the application of 1271-48-3, Name is 1,1′-Ferrocenedicarboxaldehyde, molecular formula is C12H10FeO2

Condensation reaction of 1,1?-ferrocenedicarboxaldehyde with (1R,2R)-1,2-diaminocydohexane affords a novel bowl-shaped macrocycle with a chiral concave cavity which exhibits a remarkable ability as a host material for the enantioselective enclathration of 1,1?-bi-2-naphthol.

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Iron Catalysis in Organic Synthesis | Chemical Reviews,
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Synthesis, structure determination and in vitro antiproliferative assay of a series of novel ferrocenenyl hydrazones containing 4-halopyridazin-3(2H)-one fragment(s) and three representative N-arylsubstituted (Sp)-ferroceno[d] pyridazinones are presented. The model compounds can be considered as different assemblies of the potential binding sites capable of establishing interactions including hydrogen bonds and pi-pi interactions with the relevant residues of biomolecules. Their in vitro antiproliferative effect was investigated against four tumorous cell lines by the 3-(4,5-dimethylthiazol-2-yl)-2,5- diphenyltetrazolium bromide (MTT)-assay. Our data indicate that bis-hydrazone of 1,1?-diformylferrocene carrying N-benzyl substituents and a chloropyridazinyl-substituted ferroceno[d]pyridazinone display significant activity on each cell lines investigated. The efficiency of the latter drug candidate and one N-benzyl mono-hydrazone on A2870 cell line is comparable to that of cisplatin. The constitution and relative configuration of the model compounds were established by 1H, 13C and 15N NMR methods. The structures of a mono- and bis-ferrocenylhydrazone containing 4-bromopyridazinone unit(s) were confirmed by single crystal X-ray diffraction.

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The synthesis of a C2 symmetric 1,1? ,2,2?-tetrasubstituted ferrocene system was discussed. The route involved the reduction of ferrocenyl carbonyl compounds which gave access to a range of alcohols, alkenes, alkanes, ethers, and 2-oxa[3]ferrocenophanes depending on the precise conditions used. The loss of optical activity of 1,1?-bis(hydroxymethyl)ferrocenes and 1,1?-bis(hydroxymethyl)ruthenocenes, which had been prepared by asymmetric reduction, was demonstrated in an acidic medium by extensive 1H NMR studies.

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Reaction of ferrocenylmethanol, FcCH2OH, with beta-cyano-N,N-diisopropyl chlorophosphoramidite in dichloromethane yields the ferrocenylmethylphosphonate derivative, FcCH2P(O)(N(iPr)2)(OCH2CH2CN), 2a. The crystal and molecular structure of 2a is presented. 31P NMR data suggest that this is formed from FcCH2OP(N(iPr)2)(OCH2CH2CN) via a Michaelis-Arbusov-type rearrangement. Similar behaviour was also observed for 1,2-phenylene chlorophosphite and diethyl chlorophosphite.

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In this work, a novel redox capacitor was designed for signal amplification in electrochemical detection. It was fabricated by co-electrodeposition of a conducting polymer, sulfonated polyaniline (SPAN) and chitosan on a glass carbon electrode, and its function was evaluated for being a localized source to transfer electron between FcCOOH (Fc) and Ru(NH3)6Cl3 in solution via redox cycling. Furthermore, the electrochemical detection of chloramphenicol, a broad-spectrum antibiotic was performed using the redox capacitor in the presence of Fc. A significant amplification in cathodic current response of chloramphenicol was obtained through a continuous redox-cycling reaction. The performance of the amplifying signal responded linearly to chloramphenicol in a concentration range of 0.05 to 50.0 mumol L?1 with a low detection limit of 0.01 mumol L?1. The proposed approach exhibited good reproducibility and stability, and could be used for detection of chloramphenicol in eye drops by standard addition method with the recoveries from 96.5 % to 103.0 %.

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Hierarchical porous gold films with a well-defined bimodal architecture have been made by electrodepositing gold at a constant current around a close-packed assembly of raspberry-like latex spheres (1200/60 nm) followed by template removal. Electrodeposition was stopped when the gold was either layer or 1 layer thick as evident from oscillations in the potential vs time traces. Scanning electron microscopy (SEM) images show the hierarchical pore structure with an ensemble of small ?20 nm openings located in a large ?1200 nm diameter macropore. Prior to electrochemical characterization, the electrodes were cleaned either chemically and/or via UV radiation and X-ray photoelectron spectroscopy (XPS) was used to evaluate the presence of residual polystyrene. Of the three cleaning methods investigated, sonication in chloroform-acetone followed by UV radiation proved best. The surface area of the hierarchical porous gold electrodes, determined by integrating the area under the gold oxide peak, was 4× larger than a bare gold electrode and 2× larger than a macroporous gold electrode prepared using unimodal, 1200 nm diameter latex spheres as the template. The electrochemical performance of the electrodes relative to the macroporous gold and flat gold was undertaken using cyclic voltammetry. The results show that the non-Faradaic current scales linearly with electrode area while the Faradaic current of a diffusing electrochemically reversible redox probe (ferrocene methanol) does not. For an adsorbed redox couple (ferrocene hexanethiol), the voltammetric wave shapes and surface coverage were different for the different electrodes.

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Iron Catalysis in Organic Synthesis | Chemical Reviews,
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Graphene quantum dots (GQDs) – zero-dimensional materials – are sheets of a few nanometers in lateral dimension and exhibit quantum confinement and edge site effects where sp2-bonded carbon nanocore surrounded with edged plane functional moieties is promising as advanced electroactive sensing platforms. In this work, GQDs are synthesized by solvothermal and hydrothermal techniques, with optimal size of 5 nm. Their potential in fundamental (direct electron transfer) and applied (enzymatic glucose biosensor) electrochemistry are demonstrated. Glucose oxidase (GOx) immobilized on glassy carbon (GC) electrodes modified with GQDs are investigated by means of cyclic voltammetry, differential pulse voltammetry, and amperometry. Well-defined quasi-reversible redox peaks observed under various electrochemical parameters helped to determine diffusion coefficient (D) and first-order electron transfer rate (kET). The cyclic voltammetry curves showed homogeneous ion transport for GQD with D ranging between 8.45 × 10-9 m2 s-1 and 3 × 10-8 m2 s-1 following GO < rGO < GQD < GQD (with FcMeOH as redox probe) < GOx/rGO < GOx/GO < HRP/GQDs < GOx/GQDs. The developed GOx-GQDs biosensor responds efficiently and linearly to the presence of glucose over concentrations ranging 10 muM and 3 mM with limit of detection 1.35 muM and sensitivity 0.00769 muA muM-1·cm-2 as compared with rGO (0.025 muA muM-1 cm-2, 4.16 muM) and GO (0.064 muA muM-1 cm-2, 4.82 muM) nanosheets. The high performance and stability of GQDs is attributed to sufficiently large surface-to-volume ratio, excellent biocompatibility, abundant hydrophilic edge site density, and partially hydrophobic planar sites that favors GOx adsorption on the electrode surface and versatile architectures to ensure rapid charge transfer and electron/ion conduction (<10 ms). We also carried out similar studies with other enzymatic protein biomolecules on electrode surfaces prepared from GQD precursors for electrochemical comparison, thus opening up potential sensing applications in medicine as well as bio-nanotechnology. Therefore, this conceptually novel strategy might open impressive avenues to establish green and sustainable chemistry platforms. In my other articles, you can also check out more blogs about 1273-86-5 Reference:
Iron Catalysis in Organic Synthesis | Chemical Reviews,
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