Category: 1273-94-5

Chemical engineers ensure the efficiency and safety of chemical processes, adapt the chemical make-up of products to meet environmental or economic needs, and apply new technologies to improve existing processes. Formula: C14H6FeO2. Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. Introducing a new discovery about 1273-94-5, Name is 1,1′-Diacetylferrocene

A ferrocenyl chalcone (OFcPV) with attractive optical and magnetic properties for its potential application in optoelectronic devices, excellent processability in solution, and thermal stability is reported. It was derived from the synthesis of ferrocenyl chalcone with different degrees of conjugation and the preliminary selection of the most attractive molecule based on its linear optical and electrochemical properties, and processability. Three ferrocene-derived compounds: a low-molecular weight molecule (3FcPV), an oligomer (OFcPV), and a polymer (PFcPV) were synthesized through Friedel?Crafts reactions and aldol condensations. The chemical structure of the compounds has been elucidated by proton nuclear magnetic resonance and Fourier-transform infrared spectroscopies. UV?Vis and fluorescence spectroscopies were used to evaluate the optical properties of these new compounds. The frontier orbitals levels of the materials deposited as films were determined using cyclic voltammetry. The optical bandgaps for 3FcPV, OFcPV, and PFcPV were 2.8, 2.4, and 2.36 eV, respectively. These results place these materials within the organic semiconductors and evidence the influence of the degree of electronic conjugation of the molecule in the reduction of the bandgap. The results showed that the oligomer and the polymer possess similar electronic and optical properties. However, the oligomer solubility improves the processability necessary for the manufacturing photonic devices. OFcPV was characterized by Z-scan technique, and the results indicate that OFcPV is candidate to be used as an optical limiter, fast optical switch, or optical logic gates. Also, OFcPV exhibits quasi-superparamagnetic behavior resulting from the iron disposal in the structure.

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Iron Catalysis in Organic Synthesis | Chemical Reviews,
Iron Catalysis in Organic Synthesis: A Critical Assessment of What It Takes To Make This Base Metal a Multitasking Champion

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PROBLEM TO BE SOLVED: To provide a novel method for producing a silylamine, which uses a catalyst comprising an iron complex containing no molybdenum.SOLUTION: There is provided the method for producing a silylamine, which includes forming a silylamine represented by formula N(SiRRR)(In the formula, R, R, and Rare each independently selected from the group consisting of hydrogen and a C- Clinear, branched, or cyclic hydrocarbon group) by reacting a nitrogen gas with a silyl halide represented by formula SiRRRX (In the formula, R, R, and Rare each independently selected from the group consisting of a hydrogen atom and a C- Clinear, branched, or cyclic hydrocarbon group, and X is a halogen atom) in the presence of a catalyst which comprises an iron complex containing iron but not containing molybdenum, and a reducing agent.

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Reference：
Iron Catalysis in Organic Synthesis | Chemical Reviews,
Iron Catalysis in Organic Synthesis: A Critical Assessment of What It Takes To Make This Base Metal a Multitasking Champion

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The reaction of 1,1?-diacetylferrocene with the dimethylformamide dimethyl acetal proceeds regioselectively to afford [1-acetyl-1?-(1- dimethylamino-3-oxoprop-1-en-3-yl)]ferrocene, based on which new approaches to the synthesis of 1,1?-disubstituted unsymmetrical ferrocene derivatives via the reaction with nucleophilic reagents hydrazine hydrate, hydroxylamine, and amidines were developed.

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Reference：
Iron Catalysis in Organic Synthesis | Chemical Reviews,
Iron Catalysis in Organic Synthesis: A Critical Assessment of What It Takes To Make This Base Metal a Multitasking Champion

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Moesbauer parameters are reported for a series of diacetylferrocene (DAF) complexes with Lewis acids (AlCl3, SnCl4, FeCl3, TiCl4).All the complexes show a lowering of quadrupole splitting (QS) relative to uncomplexed DAF.The decreases in QS are discussed in terms of their stereochemistry and related to previous findings in the ferrocenyl ketone series. 119Sn Moessbauer data are presented for SnCl4 * DAF.

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Iron Catalysis in Organic Synthesis | Chemical Reviews,
Iron Catalysis in Organic Synthesis: A Critical Assessment of What It Takes To Make This Base Metal a Multitasking Champion

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Borane, as a DMS or a THF complex, can efficiently reduce a large range of ferrocenyl derivatives (aldehydes, ketones, ethers, acetals, carboxylic acids, esters,…) if they bear at least one oxygen at a carbon at the alpha position. On the contrary, similar molecules, which contain nitrogen instead of oxygen, do not react with borane.

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Iron Catalysis in Organic Synthesis | Chemical Reviews,
Iron Catalysis in Organic Synthesis: A Critical Assessment of What It Takes To Make This Base Metal a Multitasking Champion

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The solubility of diacetylferrocene in water at different temperatures and in aqueous solutions of electrolytes at different concentrations of the latter at 25C was studied.

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Reference：
Iron Catalysis in Organic Synthesis | Chemical Reviews,
Iron Catalysis in Organic Synthesis: A Critical Assessment of What It Takes To Make This Base Metal a Multitasking Champion

Chemical engineers work across a number of sectors, processes differ within each of these areas, but chemistry and chemical engineering roles are found throughout, creation and manufacturing process of chemical products and materials. Quality Control of 1,1′-Diacetylferrocene. Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. Introducing a new discovery about 1273-94-5, Name is 1,1′-Diacetylferrocene

Electronic absorption spectra of ferrocene, ferrocenecarboxylaldehyde, butylferrocene, and 1,1?-diacetylferrocene in pure organic polar and non-polar solvents, pure halocarbon solvents and in several hexane-halocarbon solvent mixtures have been recorded. The investigated ferrocenes have shown several intra-molecular electronic transitions of the types pi-pi*, n-pi*, and d-d*. On using protonic solvents (HA) each of the ferocenes (Fc) acquires a proton exported from the solvent to form a complex with the formula [FcH]+[A]-. However, on using halocarbon solvents each of the ferrocenes has shown an intermolecular charge-transfer-to-solvent (CTTS) which is characterized by the appearance of new absorption spectral band(s) for each ferrocene-halocarbon solvent interaction. Formation constants (KCT) and molar absorption coefficients (epsilonCT) of these interactions have been determined and discussed. The study has indicated that the observed different transitions are dependent upon the number and nature of the substituents involved in the ferrocenes.

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Reference：
Iron Catalysis in Organic Synthesis | Chemical Reviews,
Iron Catalysis in Organic Synthesis: A Critical Assessment of What It Takes To Make This Base Metal a Multitasking Champion

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Treatment of lithium(1-dimethylamino-ethenyl)cyclopentadienide (5a) with FeCl2 generated the corresponding substituted ferrocene (2a) that rapidly underwent cyclization in a subsequent Mannich-type condensation reaction to yield the unsaturated dimethylamino-substituted [3]ferrocenophane 3a. The treatment of 1,1?-diacetylferrocene (1) with dimethylamine, diethylamine or piperidine in the presence of TiCl4 resulted in the formation of the analogously structured functionalized [3]ferrocenophanes 3a-3c, respectively, by a related intramolecular enamine-condensation pathway (complexes 3a and 3b were characterized by X-ray diffraction). Catalytic hydrogenation of 3a-c in THF at Pd/C gave the corresponding saturated amino-substituted [3]ferrocenophane systems 6a-c. The catalytic hydrogenation proceeds trans-product selectively with trans-6-cis-6 ratios ranging between ca. 5:1 and 7:1 for these examples (the complexes trans-6a·HCl, trans-6b, and trans-6c were characterized by X-ray crystal structure analysis). Quaternization of 6a by treatment with methyliodide followed by the reaction with pyrrolidine led to amine exchange at the [3]ferrocenophane framework with the formation of 6d. The amine exchange proceeds stereoselectively with a predominant overall retention (the trans-6d-cis-6d ratio obtained is again ca. 7:1). The complex trans-6d was characterized by X-ray diffraction.

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Iron Catalysis in Organic Synthesis | Chemical Reviews,
Iron Catalysis in Organic Synthesis: A Critical Assessment of What It Takes To Make This Base Metal a Multitasking Champion

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Polyamide aerogels with ferrocene as a monomer repeat unit were prepared in one step from ferrocene dicarboxylic acid and tris(4-isocyanatophenyl)methane. Pyrolysis at ?800 C yielded nanoporous carbons doped throughout with crystallites of alpha-Fe (about 50 nm in diameter), which in turn were shrouded in graphitic ribbons (<30 graphene layers thick). Transmetalation was carried out with aqueous solutions of Au, Pt, Pd, Rh, and Ni salts, via a path akin to galvanic corrosion, whereas graphitic ribbons separated anodes (alpha-Fe particles) from cathodes (defects along the ribbons). The new metallic phases formed clusters of smaller crystallites (10-20 nm in diameter) on the graphitic ribbons, leaving behind empty cage-like formations previously occupied by the Fe(0) nanoparticles. All metal-doped carbons were monolithic and over 85% porous. Catalytic activity was demonstrated with the oxidation of benzyl alcohol to benzaldehyde catalyzed with carbon-supported Au or Pt, the reduction of nitrobenzene by hydrazine to aniline catalyzed with carbon-supported Fe, and two Heck coupling reactions of iodobenzene with styrene or butyl acrylate, catalyzed with carbon-supported Pd. The distinguishing feature of those catalysts was that they could be just picked up, for example, with a pair of tweezers, and redeployed in a new reaction mixture immediately, thus bypassing less efficient recovery processes like filtration. You can also check out more blogs about1111-67-7 and wish help many people in the next few years. .Synthetic Route of 1273-94-5

Reference：
Iron Catalysis in Organic Synthesis | Chemical Reviews,
Iron Catalysis in Organic Synthesis: A Critical Assessment of What It Takes To Make This Base Metal a Multitasking Champion

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The Claisen-Schmidt reaction between 1,1?-diacetylferrocene and ferrocenecarboxaldehyde under microwave irradiation has been investigated in different conditions. The selective synthesis of 1,5-dioxo-3-ferrocenyl[5]ferrocenophane has been achieved and a simple protocol for its purification was established. The reaction was generally applicable to other non-enolizable aldehydes and the corresponding 1,5-dioxo-3-substituted [5]ferrocenophanes were obtained in high yield within 30 min.

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Reference：
Iron Catalysis in Organic Synthesis | Chemical Reviews,
Iron Catalysis in Organic Synthesis: A Critical Assessment of What It Takes To Make This Base Metal a Multitasking Champion