Category: 1271-51-8

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The invention discloses a chiral ferrocenesulfonic such P, P method for synthesizing of the ligand, belonging to the field of organic synthesis. This method is realized by the following steps : (1) with vinyl ferrocene as the starting material, chiral under the action of catalyst, and the two disclosed reaction to obtain (R) -1 the […] ferrocenesulfonic yl group II alkyl phosphine ; (2) (R) -1 the radicals […] ferrocenesulfonic yl acetate is disclosed and diethyl zinc reaction and the diphenyl phosphine reaction to obtain the chiral ferrocenyl such P, P ligand (R)-(-) – 1 the […] [(S) -2 the […] (mortars; concrete ; artificial stone) ferrocene] ethyl b is disclosed. Compared with the prior art, the present invention of fewer steps, the operation is simple, high yield, is more suitable for industrial production. Such chiral ferrocenyl made of P, P compounds can be used as the ligand of metal catalyst, used in the medical field. (by machine translation)

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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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Ferrocenyl thiols of the formula STR1 wherein n is an integer of from 2 to 4 are prepared by reacting a compoundf the formula STR2 with thioacetic acid, STR3 at elevated temperatures in the presence of a free radical initiator to produce a thiol ester of the formula STR4 and then hydrolyzing the thiol ester to produce the thiol. The thiols are useful as non-migrating burning rate modifiers for unsaturated rubber-based propellants.

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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 Cu-catalyzed borylative carboxamidation reaction has been developed using vinylarenes and isocyanates. Alkynes, branched 1,3-dienes, and bicyclic alkenes were also found to be competent coupling partners. Using a chiral phosphanamine ligand, an enantioselective variant of this transformation was developed, affording a set of alpha-chiral amides with unprecedented levels of enantioselectivity. The synthetic utility of the method was demonstrated through a series of representative stereoretentive postcatalytic derivatizations.

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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 invention discloses a ferrocenyl pyrimidines ligand synthetic method and its application in the Heck reaction, in order to ferrocene, pyridine – 2 – formaldehyde and […] as raw materials, by acetylation, aldol condensation and condensation cyclization three-step reaction synthesis, synthesis method is simple in operation, mild condition, does not need to use expensive reagent, easy to large-scale preparation. The invention also relates to such ligands for the palladium-catalyzed coupling reaction of the Heck in application. The result shows that, ferrocenyl pyrimidines tridentate ligands 6 h with good thermal stability and high-efficiency catalytic activity. In the coupling reaction can be conducted under the conditions of the water as a solvent, the pervasive switching element substrate, without the need for tedious oxygen free operation. (by machine translation)

The prevalence of solvent effects in heterogeneous catalysis in condensed media has motivated developing theoretical assessments of solvent structures and their interactions with reaction intermediates and transition states. Synthetic Route of 1271-51-8, You can get involved in discussing the latest developments in this exciting area about 1271-51-8

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. Electric Literature of 1271-51-8. Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. Introducing a new discovery about 1271-51-8, Name is Vinylferrocene

A facile synthesis of new conjugated ferrocenyl-based dendrimers is reported and the compounds obtained have been fully characterized. 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 first generation dendrimers with 3, 6 and 12 peripheral ferrocene units. The crystal structure of the conjugated ditopic ferrocenyl dendron and its aldehyde precursor are also 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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The metal-enediyne complexes [(eta 5-C5H5)Fe[eta 5-1,2-C5H3C identical to C(CH2)nC identical to]] (4, n = 4; 5, n = 5) and [(eta 5-C5H5)-Fe[eta 5-1,2-C5H3(C identical to C Me)2]] (6) were prepared from 1,2-diethynylferrocene (3). Complexes 4 and 5 were characterized in the solid state by X-ray crystallographic analysis. The structures of 4 and 6 were determined by computation using ab initio methods. A correlation was observed between ring-strain and increased ease of electrochemical oxidation along the series 6 (+0.164 V) to 5(+0.152 V) to 4 (+0.123 V). A similar trend in ionization potentials was identified in both the gas phase and in solution by computational methods.

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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 preparation and characterization of a series of dyads containing ferrocene donor and naphthalimide acceptor units, separated by aromatic spacer groups, are reported. The compounds contain a ferrocene-ethenyl spacer component linked to the 4-position of a naphthalimide by an ethynyl bridge, Fc-CH=CH-spacer-C?C-naphthalimide (Fc = ferrocenyl), where the spacers are 1,4-phenyl, 4,4?-biphenyl, and 9,10-anthryl. Precursors to the dyad systems, halo-spacer-C?C-naphthalimide, are also characterized where the halo-spacers are 1-bromophenyl, 4-bromobiphenyl, and 9-iodoanthryl. Various synthetic strategies are examined, with attachment of the spacer to 4-ethynylnaphthalimide followed by reaction with ethenylferrocene proving the most effective route. Crystal structures of the donor-spacer-acceptor (D-S-A) compound (E)-1-ethenylferrocenyl-4-(4-ethynyl-N-methyl-1,8-naphthalimide)benzene (7) and the precursor compounds (E)-4-bromo-4?-(ethenylferrocenyl) biphenyl (2) and 4-ethynyl-4?-(4-ethynyl-N-methyl-1,8-naphthalimide) biphenyl (4) are reported, with packing in the two naphthalimide derivatives dominated by offset pi-stacking interactions. Compounds containing the ferrocenyl groups show the anticipated one-electron oxidation processes at potentials that vary little with the spacer groups. Both the ferrocenyl derivatives and their naphthalimide precursors show reversible reduction waves. The single wave for the phenyl and biphenyl compounds and their precursors is assigned to reversible one-electron reduction of the naphthalimide unit. The corresponding anthracene derivatives display two reversible reductions associated with the naphthalimide and the anthryl moieties, respectively.

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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 new method for substitution of a vinylic hydrogen with an alkyl group (a Mizoroki-Heck type transformation) was developed by a titanocene catalyst in the presence of nBuMgCl. This reaction could proceed regio- and stereoselectively under mild conditions to afford E-olefins using primary and secondary alkyl halides. The reactions of aliphatic alkenes, e.g., 1-octene and internal alkenes, were sluggish. When t-alkyl halides were employed, alkylative dimerization of alkenes proceeded exclusively to give symmetrical vic-diarylalkanes. These reactions involved addition of alkyl radicals to arylalkenes to form benzyl radicals as a carbon-carbon bond-forming step. Dimerization of thus formed benzyl radicals afforded symmetrical alkanes and beta-hydrogen elimination from benzyltitanocene intermediates gave alkylated alkenes. A possibility that titanocene activates alkenes as radical accepters was also proposed.

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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 short and efficient preparation of conjugated oligo(phenylene-ethylene) thiols bearing redox-active ferrocene moieties is described. While minimising the number of synthetic steps, the proposed strategy permits the development of sets of oligomers with varying chain length. The redox properties of the compounds in solution are determined. Preliminary studies of self-assembled monolayers (SAMs) on gold electrodes are discussed, and indicate that electron transfer through the SAMs is indeed rapid. Wiley-VCH Verlag GmbH & Co. KGaA, 2007.

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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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Nanoscale lithography of small- and medium-sized molecules on a clean silicon surface was studied using benzene. A scanning tunneling microscopy (STM)-based nanolithographic method was also investigated. The patterning areas of the surface with ethylene and vinyl ferrocene was also discussed. It was observed that any molecules that remain unsaturated after adsorption are candidates to form a monolayer template for this kind of lithography.

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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