1271-55-2Relevant articles and documents
Metal complexation of thioacylferrocenes: crystal structures of pentacarbonyl(thiobenzoylferrocene-S)chromium and benzoylferrocene
Barnes, John C.,Bell, William,Glidewell, Christopher,Howie, R. Alan
, p. 369 - 378 (1990)
Acylferrocenes (C5H5)Fe(C5H4COR) (R=CH3, C2H5, (CH3)2CH, (CH3)3C or Ph) can be readily thionated to give thioacylferrocenes by use of P4S10 in non-polar solvents such as CH2Cl2 or toluene; use of polar solvents such as THF or diglyme provides very poor conversions.Thiobenzoylferrocene reacts readily with Et4N+-- (M = Cr, Mo, or W) in the presence of silver nitrate to yield (C5H5)Fe>, in which the M(CO)5 group is bonded to the sulphur atom as revealed by an X-ray diffraction study.The structure consists of isolated molecules in which a Cr(CO)5 fragment of approximate C4v symmetry is bonded via sulphur to the thioacylferrocene with an Cr-S bond length of 2.412(1) Angstroem, an S=C bond length of 1.667(2) Angstroem and a C-S-Cr angle of 121.9(1) deg.Photo oxidation of (C5H5)Fe> yields benzoylferrocene the crystal structure of which was determined.
Generation of ferrocenylvinyl cation CpFeC5H4–C+=CH2 by protonation of ferrocenylacetylene with Nafion and its reactions with SMe2 and PPh3 in scCO2 giving onium salts
Kizas, Ol'ga A.,Chaschin, Ivan S.,Godovikov, Ivan A.,Dolgushin, Fedor M.,Antonov, Dmitrii Yu.,Nikitin, Lev N.,Khokhlov, Alexei R.
, p. 368 - 370 (2017)
Cation CpFeC5H4–C+=CH2 was obtained by protonation of FcC[tbnd6]CH with Nafion superacid in DMF or scCO2 and characterized by NMR spectroscopy. The protonation in the presence of SMe2 or PP
The synthesis of ferrocenyl- and ferrocenoylpyrimidines
Zherebker,Rodionov,Pilipenko,Kachala,Nikitin,Belousova,Simenel
, (2014)
New derivatives of pyrimidine were synthesized from ferrocenyl ketones by the reactions of [3+1+1+1]annulation and intermolecular cyclization. The electrochemical behavior of the obtained compounds was studied by the method of cyclic voltammetry. All the
Patin, H.
, (1974)
Very high rate enhancement of benzyl alcohol oxidation by an artificial enzyme
Marinescu, Lavinia G.,Bols, Mikael
, p. 4590 - 4593 (2006)
(Figure Presented) Promoting the atomic dialogue! At neutral pH and ambient temperature, a cyclodextrin-derived ketone causes hydrogen peroxide and benzyl alcohols to meet in its active site and react up to 60 000 times faster than they do outside the cyclodextrin.
Hall, D. W.,Richards, J. H.
, p. 1549 - 1554 (1963)
Assembly of dendrimers with redox-active [{CpFe(μ3-CO)} 4] clusters at the periphery and their application to oxo-anion and adenosine-5′-triphosphate sensing
Aranzaes, Jaime Ruiz,Belin, Colette,Astruc, Didier
, p. 132 - 136 (2006)
9, 16, or 27 [CpFe(μ3-CO)]4 clusters contain the title assemblies (see picture). The one-electron oxidation Fe 4→Fe4+of all Fe4 units appears as a single reversible cyclic voltammetry wave and was used in solution and with dendrimer-modified electrodes for oxo-anion recognition. ATP2- is selectively recognized and better than H2PO4-. The larger the dendrimer, the easier is the re-use of the modified electrode sensor. (Chemical Equation Presented)
Synthesis of new binuclear ferrocenyl compounds by hydrosilylation reactions
Teimuri-Mofrad, Reza,Mirzaei, Farzaneh,Abbasi, Hassan,D. Safa, Kazem
, p. 197 - 205 (2017)
Ferrocenyl silanes are prepared by treatment of Grignard reagents produced from 4-chlorobutylferrocene derivatives and chlorodimethylsilane in THF. Butenylferrocenes are prepared by the elimination reaction of 4-chlorobutylalkylferrocenes by sodium tert-butoxide in DMSO. A hydrosilylation reaction between a butenyl compound and ferrocenylsilane occurred in dry toluene at room temperature in the presence of the Karstedt catalyst to produce the desired binuclear ferrocenyl compound in good to high yields. The electrochemical behavior of new ferrocenyl compounds were studied by cyclic voltammetry in CH3CN/0.1?M LiClO4, and the relation between the peak currents and the square root of the scan rate, showed that the redox process is diffusion-limited.
Hauser, C. R.,Lindsay, J. K.
, p. 482 - 485 (1957)
The d4/d3 redox pairs [MX(CO)(η-RCCR)Tp′] z (z = 0 and 1): Structural consequences of electron transfer and implications for the inverse halide order
Adams, Christopher J.,Bartlett, Ian M.,Carlton, Susannah,Connelly, Neil G.,Harding, David J.,Hayward, Owen D.,Orpen, A. Guy,Patron, Elena,Ray, Christopher D.,Rieger, Philip H.
, p. 62 - 72 (2007)
The d4 halide complexes [MX(CO)(η-RCCR)Tp′] {X = F, Cl, Br or I; R = Me or Ph; M = Mo or W; Tp′ = hydrotris(3,5- dimethylpyrazolyl)borate} undergo one-electron oxidation to the d3 monocations [MX(CO)(η-RCCR)Tp′]+, isolable for M = W, R = Me. X-Ray structural studies on the redox pairs [WX(CO)(η-MeCCMe)Tp′] z (X = Cl and Br, z = 0 and 1), the ESR spectra of the cations [WX(CO)(η-RCCR)Tp′]+ (X = F, Cl, Br or I; R = Me or Ph), and DFT calculations on [WX(CO)(η-MeCCMe)Tp′]z (X = F, Cl, Br and I; z = 0 and 1) are consistent with electron removal from a HOMO (of the d4 complexes) which is π-antibonding with respect to the W-X bond, π-bonding with respect to the W-C(O) bond, and δ-bonding with respect to the W-Calkyne bonds. The dependence of both oxidation potential and ν(CO) for [MX(CO)(η-RCCR)Tp′] shows an inverse halide order which is consistent with an ionic component to the M-X bond; the small size of fluorine and its closeness to the metal centre leads to the highest energy HOMO and the lowest oxidation potential. In the cations [MX(CO)(η-RCCR)Tp′] + electronegativity effects become more important, leading to a conventional order for Cl, Br and I. However, high M-F π-donation is still facilitated by the short M-F distance. The Royal Society of Chemistry.
Buell, G. R.,McEwen, W. E.,Kleinberg, J.
, p. 40 - 43 (1962)
1-Ethyl-3-methylimidazolium halogenoaluminate melts as reaction media for the Friedel-Crafts acylation of ferrocene
Surette, Jacqueline K. D.,Green, Laine,Singer, Robert D.
, p. 2753 - 2754 (1996)
Ionic liquid mediated Friedel-Crafts acylation of the organometallic complex ferrocene can be performed in 1-ethyl-3-methylimidazolium halogenoaluminate melts, EtMeimI-AlCl3, as well as in the liquid clathrate formed upon addition of an excess
Synthesis and thermal performance of poly(cyclotriphosphazene- acetylferrocene) derivative
Zhao, Zhengping,Yu, Fengying
, p. 3639 - 3642 (2014)
Amino nucleophilic reagents were prepared by using acetylferrocene and diamines and then the iron-phosphazene derivative was first synthesized by the nucleophilic substitution reaction of hexachlorocyclotriphosphazene and the amino nucleophilic reagent. FT-IR curve proved that the aim product was synthesized and the chlorine atom of iron-phosphazene derivative did not completely replaced. The thermal performance of the iron-phosphazene derivative was examined by TGA. This suggests that the iron-phosphazene derivative began to degrade at 200 °C and still has 25 % residue at 700 °C. The residues morphology of the iron-phosphazene derivative was also examined. The surface of residues was smooth, fibrous arrangement and has a certain orientation structure. EDS confirmed that the main components of the higherature calcined residues were C, P and Fe.
Ferrocenylalkylation of 2-mercaptobenzoxazoles
Osipova, E. Yu.,Ivanova,Rodionov,Korlyukov,Arkhipov,Simenel
, (2016)
Regioselectivity of the HBF4-catalyzed ferrocenylalkylation of 2-mercaptobenzoxazole in two phase aqueous organic solvent mixture was studied. The reaction proceeds regioselectively at the heterocyclic nitrogen atom. Structures of the synthesiz
A simple synthetic approach for the transformation of (S)-Ugi's amine
Zha, Gao-Feng,Xu, Wei-Yun,Dai, Peng,Lai, Xiao-Yan,Liu, Wei,Shen, Yong-Cun
, p. 1301 - 1304 (2014)
A simple synthetic approach for the transformation of (S)-Ugi's amine, another configuration of (R)-Ugi's amine, one of the most widely used intermediate in the preparation of chiral ferrocene-based ligands, has been developed via esterification using anhydride, alkaline hydrolysis and active manganese dioxide oxidation, and the corresponding ferrocenyl ketone was afforded in good yields.
Bismuth subnitrate-catalyzed markovnikov-type alkyne hydrations under batch and continuous flow conditions
?tv?s, Sándor B.,Fül?p, Ferenc,Szécsényi, Zsanett
, (2021/05/31)
Bismuth subnitrate is reported herein as a simple and efficient catalyst for the atom-economical synthesis of methyl ketones via Markovnikov-type alkyne hydration. Besides an effective batch process under reasonably mild conditions, a chemically intensified continuous flow protocol was also developed in a packed-bed system. The applicability of the methodologies was demonstrated through hydration of a diverse set of terminal acetylenes. By simply switching the reaction medium from methanol to methanol-d4, valuable trideuteromethyl ketones were also prepared. Due to the ready availability and nontoxicity of the heterogeneous catalyst, which eliminated the need for any special additives and/or harmful reagents, the presented processes display significant advances in terms of practicality and sustainability.
Cu2+-selective naked-eye ‘off–on' fluorescent probe with multisignals: chromaticity, fluorescence, electrochemistry
Xu, Xiuling,Zhang, Xiaoli,Cao, Cuilan,Zheng, Bingbing,Deng, Hongxia,Shuai, Qi
, p. 1142 - 1150 (2020/05/25)
In this study, a rhodamine–acetylferrocene conjugate of RBFc was synthesized and then characterized using spectroscopy and single-crystal analysis. The chemosensor RBFc exhibited a marked colour change from colourless to pink after binding to Cu2+ ions. Importantly, under the presence of the other competing cations in aqueous solution, only Cu2+ ions caused spirolactam ring opening in rhodamine B in RBFc, resulting in an enhanced absorbance of ultraviolet light spectra and fluorescence spectra, as well as obvious shifts in cyclic voltammetry curves and differential pulsed voltammetry curves. The novel probe described in this manuscript provides an attractive approach for detecting Cu2+ in the presence of other multisignals.