Category: 1271-48-3

You could be based in a university, combining chemical research with teaching; in a pharmaceutical company, working on developing and trialing new drugs; category: iron-catalyst, 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

The chiral 1,1?-bis-acetals, bis-1,1?-[(2S, 4S)-(hydroxymethyl)-2-dioxane1,3]-ferrocene (3) and 1,1?-bis-1,1?-[(2S, 4S)-(methoxymethyl)-2-dioxane1,3]-ferrocene (4) were synthesized. (3) was crystallographically characterised. The ortholithiation of (4) was studied in various conditions. Fair yields of monosubstituted compounds could be obtained with a complete regioselectivity in favor of the 2 position but the diastereoselectivities were moderate (up to 35%). Some disubstituted compounds can be isolated but in low yields (up to 8%). The regioselectivity is complete in favor of the 2,2?-disubstituted isomer. Only the diastereoisomer with two opposite planar chiralities is observed.

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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 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: C12H10FeO2. Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. Introducing a new discovery about 1271-48-3, Name is 1,1′-Ferrocenedicarboxaldehyde

N-Substituted 2-aza-[3]-ferrocenophanes were easily synthesized from 1,1?-ferrocenedicarbaldehyde and aliphatic amines in high yields. One of the ferrocenophanes served as a ligand for the copper-catalyzed oxidative coupling of 2-naphthol derivatives to give the products in good yields with up to 92% ee, and it also efficiently catalyzed the asymmetric Michael addition reaction as an organocatalyst.

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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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A series of dyads and triads using ferrocene (Fc) as the donor and 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) as the acceptor, linked either directly or through an N-phenylmethanimine or ethynylbenzene linker have been synthesized. While the former (directly linked) dyads were prepared through acid catalyzed condensation of pyrrole with ferrocenecarboxaldehye or 1,1?-ferrocenedicarboxaldehyde followed by oxidation with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), the latter two sets (imine and alkyne linked) of dyads were obtained through Schiff base condensation or Sonogashira coupling reactions, respectively. The compounds were fully characterized with spectroscopic data and single crystal X-ray analysis in one case. The peaks corresponding to the Fe(ii)/Fe(iii) redox couple at 0.33 to 0.38 V showed a varying degree of positive anodic shift, which reflected the strong electron withdrawing effect of the corresponding BODIPY unit. The first hyperpolarisability, beta, was measured in chloroform using the femtosecond hyper-Rayleigh scattering (HRS) method at 1300 nm. Interestingly, from the betaHRS values, the dominating role of the Fc donor and the intervening linker could be established, which correlated well with the experimental linear optical data as well as theoretical data calculated using density functional theory (DFT) and time-dependent DFT calculations. This work constitutes the first report where electron accepting power of BODIPY in combination with the Fc donor moiety, is exploited and we demonstrate that the values are comparable to that of push-pull derivatives where BODIPY was used as the conjugated linker.

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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

As a society publisher, everything we do is to support the scientific community – so you can trust us to always act in your best interests, HPLC of Formula: C12H10FeO2, and get your work the international recognition that it deserves. Introducing a new discovery about 1271-48-3, Name is 1,1′-Ferrocenedicarboxaldehyde

A selection of metallocene inclusion compounds with channel structured MOFs (MOF = Metal-Organic Framework) were obtained via solvent-fee adsorption of the metallocenes from the gas-phase. The adsorbate structures ferrocene 0.5@MIL-53(Al) (MIL-53(Al) = [Al(OH)(bdc)]n with bdc = 1,4-terephthalate), ferrocene0.25@MIL-47(V) (MIL-47(V) = [V(O)(bdc)]n), cobaltocene0.25@MIL-53(Al), cobaltocene0.5@MIL-47(V), 1-formylferrocene0.33@MIL-53(Al) , 1,1?dimethylferrocene0.33@MIL-53(Al), 1,1?- diformylferrocene0.5@MIL-53(Al) were determined from powder X-ray diffraction data and were analyzed concerning the packing and orientation of the guest species. The packing of the ferrocene guest molecules inside MIL-47(V) is significantly different compared to MIL-53(Al) due to the lower breathing effect and weaker hydrogen bonds between the guest molecules and the host network in the case of MIL-47(V). The orientation of the metallocene molecule is also influenced by the substituents (CH3 and CHO) at the cyclopentadienyl ring and the interaction with the bridging OH group of MIL-53(Al). The inclusion of redox active cobaltocene into MIL-47(V) leads to the formation of a charge transfer compound with a negatively charged framework. The reduction of the vanadium centers is stoichiometric. The resulting material is a mixed valence compound with a V3+/V4+ ratio of 1:1. The new compounds were characterized via thermal gravimetric analysis, infrared spectroscopy, solid state NMR, and differential pulse voltammetry. Both systems are 1D-channel pore structures. The metallocene adsorbate induced breathing effect of MIL-53(Al) is more pronounced compared to MIL-47(V), this can be explained by the different bridging groups between the MO6 clusters. The Royal Society of Chemistry 2010.

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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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Reaction of ferrocenecarboxaldehyde 13 and its vinylogue, (E,E)-1-ferrocenyl-4-formyl-1,3-butadiene (16), with nitrofluorenes as CH-acids, results in push-pull compounds of the type Fc-pi-fluorene (8a-g, 12a-e). Similar reaction with bifunctional ferrocene and ruthenocene dicarboxaldehydes results, depending on the fluorene structure, in the products of mono- or di-condensation, OHC-Fc-CH=fluorene (11d,e) or fluorene=CH-Fc-CH=fluorene and fluorene=CH-Rc-CH=fluorene (9a-c, 10a-c). Intramolecular charge transfer (ICT) in compounds 8 results in lowering the rotation barrier around the CH=fluorene double bond and easy E-Z isomerisation in solution. Cyclic voltammetry (CV) experiments show a reversible single-electron oxidation of Fc-CH=fluorenes (8) yielding the cation and two reversible single-electron reduction waves yielding the radical anion and dianion (for 8a-e) which merge into one two-electron reduction wave for 8f-h. ICT was also manifested in the electron absorption spectra of 8-12, and energies of ICT (as well as reduction potentials in CV) were found to display excellent correlation (r?0.99) with Hammett-type substituents constants (sigmap-) in the fluorene moiety. Compounds 8-12 show solvatochromism [8a: lambdaICT=604.5 nm (acetonitrile), 622.5 nm (1,2-dichloroethane)], with, however, no quantitative regularities for 10 solvents of different polarity. Bathochromic shifts of 40-83 nm and an increase in the intensity of ICT bands were observed with lengthening of the pi-bridge between ferrocene and fluorene moieties (8?12) whereas substitution of the ferrocene unit in 9 by the ruthenocene unit (10) resulted to a hypsochromic shift of ca. 100 nm due to decreasing donor ability of the latter metallocene fragment. Acceptor 8a was found to sensitise the photoconductivity of poly-N-(2,3-epoxypropyl)carbazole showing moderate holographic response of the materials. Molecular and crystal structures for ferrocene derivatives 8a, 8g, and 11d were determined by single-crystal X-ray diffraction. Tetranitro derivative 8a shows substantial distortion, caused by steric repulsion between the nitro groups in positions 4 and 5, which precludes the formation of stacks, and pairs of fluorene moieties contact face-to-face (interplanar distance 3.8 A?). In di- and trinitro derivatives 8g and 11d the fluorene moieties are more planar and their crystal packing motifs are similar: fluorene moieties form good stacks, parallel to the x-axis in 8g and the y-axis in 11d, with interplanar separations between fluorene moieties of 3.35-3.36 A? for 8g and alternate separations of 3.52 and 3.55 A? for 11d.

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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

You could be based in a university, combining chemical research with teaching; in a pharmaceutical company, working on developing and trialing new drugs; Application of 1271-48-3, 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

A chameleonic, redox-switchable carrier molecule: A [4,4]ferrocenophane ligand can selectively recognize Mg2+ ions through complexation. This ligand can transport and release Mg2+ ions by application of an external electrochemical stimulus across a CH2Cl2 liquid membrane (see picture). Furthermore, dramatic color changes are seen, which allow the potential for “naked-eye” detection. (Chemical Equation Presented).

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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

With the volume and accessibility of scientific research increasing across the world, it has never been more important to continue building the reputation for quality and ethical publishing we’ve spent the past two centuries establishing.In an article, 1271-48-3, molcular formula is C12H10FeO2, belongs to iron-catalyst compound, introducing its new discovery., Reference of 1271-48-3

The vinylene-bridged ansa-ferrocene complex [(eta5-C5H4)CH=CH(eta5-C 5H4)]Fe (1) was synthesized by the McMurry coupling of 1,1?-ferrocenedicarbaldehyde (2). The ring opening metathesis polymerization (ROMP) of this strained metallocene gave poly(ferrocenylenevinylene) (3) as an insoluble orange solid which has a conductivity of 10-3 Omega-1 cm-1 after doping with iodine. Partially soluble materials resulted when 1 was copolymerized with norbornene to yield a block copolymer.

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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

category: iron-catalyst, With the volume and accessibility of scientific research increasing across the world, it has never been more important to continue building the reputation for quality and ethical publishing we’ve spent the past two centuries establishing.In an article, 1271-48-3, molcular formula is C12H10FeO2, belongs to iron-catalyst compound, introducing its new discovery.

The tetra-imino ferrocenophane (1) was cocrystallized with 1,4-diiodo-tetrafluoro-benzene (TFDIB). In the resulting compound 2, two of the four ferrocenophane nitrogens show interactions with the iodine atoms of TFDIB leading to a polymeric structure with extended linear alternating electron donor (1) and acceptor (TFDIB) molecule chains. For the first time, imino nitrogens are involved in this type of halogen bonding. The N?I non-covalent bonds (N?I distances 2.879(5) and 2.896(5)A; N?I-C angles 171.1(2) and 178.1(2)) are the directing interactions responsible for the observed self-assembly. The ferrocene fragments of the macrocycle are in an almost perpendicular conformation. Moessbauer spectroscopy indicates the sole presence of low spin iron (II). The temperature dependence of the magnetic susceptibility is corresponding to a quasi-diamagnetic compound.

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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

Synthetic Route of 1271-48-3, Chemistry graduates have much scope to use their knowledge in a range of research sectors, including roles within chemical engineering, chemical and related industries, healthcare and more. 1271-48-3, Name is 1,1′-Ferrocenedicarboxaldehyde, molecular weight is 242.0516. In an Article，once mentioned of 1271-48-3

The synthesis and characterization of a novel redox molecular receptor is reported. This chemosensor is structured on a ferrocene fragment whose cyclopentadienyl moieties have been connected to distinct and complementary zinc porphyrin and alkylammonium binding sites, enabling multipoint recognition and detection of anionic species. Cumulative effects of multiple anchoring points on this ammonium-ferrocene-metalloporphyrin chemosensor allowed the unprecedented ferrocene-based voltammetric sensing of halide anions.

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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

Product Details of 1271-48-3, Researchers are common within chemical engineering and are often tasked with creating and developing new chemical techniques, frequently combining other advanced and emerging scientific areas.1271-48-3, Name is 1,1′-Ferrocenedicarboxaldehyde, molecular weight is 242.0516. belongs to iron-catalyst compound, In an Article，once mentioned of 1271-48-3

The zinc complex [PhP(S)(NMeNH2)2]ZnCl2 (2), cleanly obtained by reaction of the phosphodihydrazide PhP(S)(NMeNH2)2 (1) with ZnCl2, is a good reagent in producing new polymetallic compounds by condensation reaction with aldehydes. The reaction of 2 with terephthalaldehyde (3) in a 2/1 or 1/1 stoichiometry leads selectively to the acyclic zinc compound [C6H4-1,4-(CH=NNMePhP(S)NMeNH2)2][ZnCl2]2 (6) or to the macrocyclic zinc complex [PhP(S)C6H4-1,4-(CH=NNMe)2]2[ZnCl2]2 (7). Reaction of compound 2 with 2 equiv of ferrocenecarbaldehyde affords the zinc-iron phosphodihydrazone complex [PhP(S)(NMeN=CHC5H4FeCp)2]ZnCl2 (8) whose structure has beendetermined by X-ray crystallography. Crystal data: triclinic P1-, with a = 12.798(1) A, b = 14.639(2) A, c = 11.744(2) A, alpha =111.74(1)°, beta = 115.92(1)°, gamma = 68.36(1)°, V = 1780.9 A**3, Z = 2; R = 0.037, Rw = 0.044 for 3345 observations and 448 variable parameters. In this neutral trimetallic complex, the Zn(II) center adopts a pseudotetrahedral geometry. This structure is characterized by a five-membered ring with the Zn(II) bonded to the S atom and to one of the N atoms of the phosphodihydrazone ligand PhP(S)(NMeN=CHC5H4FeCp)2 (9). Variable-temperature NMR investigations of 8 show that 9 can act as a hemilabile ligand toward ZnCl2 through an exchange process between the two hydrazone arms in solution. Electrochemical study ofcomplex 8, when compared to the ferrocenyl ligand 9, shows that ZnCl2 complexation induces a shift of 80 mV toward a more anodic potential. Reaction of 2 with the ferrocene-1,1′-dicarbaldehyde also produces the bisferrocenyl dizinc macrocycle [Fe(C5H4CH=NNMePhP(S)NMeN=CHC5H4)2Fe][ZnCl2]2 (10).

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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