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An interrupted Pummerer/nickel-catalysed cross-coupling strategy has been developed and used in the elaboration of styrenes. The operationally simple method can be carried out as a one-pot process, involves the direct formation of stable alkenyl sulfonium salt intermediates, utilises a commercially available sulfoxide, catalyst, and ligand, operates at ambient temperature, accommodates sp-, sp2-, and sp3-hybridised organozinc coupling partners, and delivers functionalised styrene products in high yields over two steps. An interrupted Pummerer/cyclisation approach has also been used to access carbo- and heterocyclic alkenyl sulfonium salts for cross-coupling.

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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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TCNQ and PVF polymer film electrodes have been studied by cyclic voltammetry.It has been established that cyclic voltammetric curves become distorted by uncompensated ohmic resistance for medium thick films at scan rates higher than 0.025 V/s.The effect of ohmic voltage drop can be practically eliminated by the use of an Electroflex GMK (Szeged) potentiostat using the interruption technique.

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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 facile synthesis of new conjugated oligo-ferrocenyl compounds is described. The synthetic method consists of a two step procedure, which combines olefination by the Wittig procedure and Pd-mediated C-C coupling, leading to high yields of tri- and penta-ferrocenyl complexes. The crystal structures of the 1,1?-bissubstituted ferrocenyl precursors are described. The electrochemical analysis of the compounds obtained, reveals that the peripheral ferrocenyl units display an equivalent redox behavior, with a large separation of the peak corresponding to the central ferrocenyl unit.

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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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[1.1.1]Propellane is a highly strained tricyclic hydrocarbon whose reactivity is dominated by addition reactions across the central inverted bond to provide bicyclo[1.1.1]pentane derivatives. These reactions proceed under both radical and two-electron pathways, hence, providing access to a diverse array of products. Conversely, transition metal-catalyzed reactions of [1.1.1]propellane are underdeveloped and lack synthetic utility, with reported examples generally yielding mixtures of ring-opened structural isomers, dimers, and trimers, often with poor selectivity. Herein, we report that nickel(0) catalysis enables the use of [1.1.1]propellane as a carbene precursor in cyclopropanations of a range of functionalized alkenes to give methylenespiro[2.3]hexane products. Computational studies provide support for initial formation of a Ni(0)-[1.1.1]propellane complex followed by concerted double C-C bond activation to give the key 3-methylenecyclobutylidene-nickel intermediate.

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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 hybrid donor?acceptor complexes with a ferrocene moiety and isophorone derivatives were synthesized. Data from 1H NMR, 13C NMR, Fourier transform infrared, atomic absorption and mass spectroscopies and CHN analysis supported the predicted structure of the products. A comparative investigation was performed using UV?visible, cyclic voltammetry and fluorescence measurements. Density functional theory was used to optimize the chromophore structure and calculation of highest occupied and lowest unoccupied molecular orbital energy levels. The ferrocene/isophorone hybrids show useful properties for further development and studies as electro-optic materials.

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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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Product analysis and kinetic data for the reaction of vinylferrocene with thallium triacetate in methanol are reported.Styrene has also been investigated under similar conditions. 1-Ferrocenyl-1,2-dimethoxyethane was the sole product isolated, since the methoxythallation adduct undergoes solvolysis under the reaction conditions. beta-Methylvinylferrocene yields both addition and substitution products in the reaction with Tl(OAc)3, as well as in the previously described reaction with Hg(OAc)2.

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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 combination of electrochemical and radiotracer methods offers a unique possibility of studying the motion of counter- and co-ions during electrochemical transformations occurring in a polymer film. In addition, information can be obtained about the embedding of electrolytes during electropolymerization penetration of electrolytes into the films prepared by solvent-evaporation procedures, the ion-exchange behavior, and the mechanism of the redox processes. Results on poly/vinyl ferrocene/tetracyanoquinodimethane polyester, polypyrrole, and polyaniline are described.

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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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Novel trihydridosilyl-terminated polysilanes and methods for their synthesis, which are applicable to other polysilanes, are provided. The synthetic methods provide for facile preparation of products with minimal handling of pyrophoric intermediates and byproducts. The novel compounds contain at least three silicon-silicon bonds and at least one terminal silicon atom having three hydrogen substituents.

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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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Detailed in this Communication is the enantioselective synthesis of 1,1-diarylalkanes, a structure found in a range of pharmaceutical drug agents and natural products, through the employment of copper(I) hydride and palladium catalysis. Judicious choice of ligand for both Cu and Pd enabled this hydroarylation protocol to work for an extensive array of aryl bromides and styrenes, including beta-substituted vinylarenes and six-membered heterocycles, under relatively mild conditions.

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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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Acylferrocenes were synthesized by hydroiminoacylation of the omega-olefins 1-pentene (3a), vinylferrocene (3b) and but-3-enylferrocene (3c), with the ferrocenecarboxaldimine 2, prepared from ferrocenecarboxaldehyde (1) and 2-amino-3-picoline, under the action of Wilkinson’s catalysts, followed by hydrolysis of the corresponding ketimines (5a, 5b and 5c).This hydroiminoacylation was used to incorporate the ferrocenyl group into phenyl-terminated poly-butadiene (PTPB, consisting of 27percent vinyl and 73percent internal olefin group). 74percent hydroacylation of the vinyl group in 7 wasaccomplished in the first catalytic reaction and in 10 the second hydroacylation completed the conversion of the vinyl group into acylferrocene.

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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