Tag: M.W:200-300

Category: thiazolidine. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 2-(7-Bromo-1H-indol-3-yl)acetic acid, is researched, Molecular C10H8BrNO2, CAS is 63352-97-6, about Auxin activity of brominated indoles from the marine sponge Pseudosuberites hyalinus.

A series of brominated indoles from the marine sponge Pseudosuberites hyalinus and 6-bromoindole-3-acetic acid (6-Br-IAA) were assessed for auxin activity in Avena and Triticum straight growth assay. 6-Br-IAA showed low activity compared to 6-chloroindole-3-acetic acid, while the corresponding Me esters had comparable activities.

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Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com

Herberhold, Max; Ellinger, Max; Kremnitz, Walter published the article 《Ferrocenylamines》. Keywords: ferrocenylamine; amine ferrocenyl.They researched the compound: Bromoferrocene( cas:1273-73-0 ).Safety of Bromoferrocene. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:1273-73-0) here.

A general method for the preparation of ferrocenylamines involves the reactions of ferrocenyl bromide, FcBr, with the Na salt of an amine or amide in the presence of copper(I) bromide/pyridine. The syntheses of diferrocenylphenylamine and triferrocenylamine, NFc2Ph and NFc3, resp., are reported, and the hydrolysis of N-ferrocenylacetamide to give ferrocenylamine, NH2Fc, is described. The system of the ferrocenyl- and/or phenyl-substituted derivatives of ammonia, NFcnX3-n (n = 0-3; X = H, Ph), is characterized on the basis of mass, UV, visible, and 1H and 13C NMR spectra.

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Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com

Safety of Bromoferrocene. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: Bromoferrocene, is researched, Molecular C10BrFe, CAS is 1273-73-0, about Synthesis of diferrocenylglyoxime and some of its transition-metal complexes. Author is Ertas, Mumtaz; Koray, Ali R.; Ahsen, Vefa; Bekaroglu, Ozer.

Diferrocenylglyoxime (I) was prepared by treating mono- or dilithioferrocene with anti-dichloroglyoxime. Characterization of this novel vic-dioxime and some of its transition metal complexes is described. E.g., treating NiCl2 with I in EtOH, followed by NaOH in EtOH, gave 60% Ni complex II (L = ferrocenyl).

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Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com

Quality Control of Bromoferrocene. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: Bromoferrocene, is researched, Molecular C10BrFe, CAS is 1273-73-0, about The observation of ion-pairing effect based on substituent effect of ferrocene derivatives. Author is Shi, Yujie; Fang, Liu; Li, Xuan; Qu, Liangti; Shao, Huibo.

The ion-pairing effect was studied based on the substituent effect of ferrocene (Fc) derivatives using cyclic voltammetry. The presence of ion-pairing strongly affected the electrochem. redox behavior in the organic solvent. The formal redox potential (E0′, the average of anodic and cathodic peak potential) shifted neg. with the increasing ion-pairing effect. That was because the formation of ion pair (Fc+·ClO-4) was beneficial to equilibrium shift from Fc to Fc+ in thermodn. Electron-donating and electron-withdrawing substituents of ferrocene derivatives were employed for a deep study of ion-pairing effect, resp. Both ion-pairing effect and electron-donating substituent effect facilitated the neg. shift of E0′ for ferrocene derivatives, showing the pos. cooperativity. While the electron-withdrawing substituent effect resulted in the pos. shift of E0′ for ferrocene derivatives and was unfavorable for the oxidation of Fc derivatives, reflecting the neg. cooperativity with ion-pairing effect. The reversal phenomenon of weak electron-withdrawing substituent was revealed when the ion-pairing effect was stronger than the electron-withdrawing substituent effect, indicating that the ion-pairing function has a significant effect on electrochem. behavior of ferrocene derivatives

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Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com

Category: thiazolidine. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: Bromoferrocene, is researched, Molecular C10BrFe, CAS is 1273-73-0, about Coordination chemistry of perhalogenated cyclopentadienes and alkynes. XXVIII new high-yield synthesis of monobromoferrocene and simplified procedure for the synthesis of pentabromoferrocene. Molecular structures of 1,2,3-tribromoferrocene and 1,2,3,4,5-pentabromoferrocene. Author is Suenkel, Karlheinz; Bernhartzeder, Stefanie.

Monobromoferrocene (1) was obtained in 95% yield from ferrocene via lithiation with tert-BuLi/KO-tert-Bu and bromination with dibromotetrachloroethane. Starting from 1 mixtures of 1,2-dibromoferrocene (2) and apparently unreacted 1 (ranging from 80:20 to 50:50, depending on the reaction conditions) can be obtained via a lithiation- zincation- bromination sequence. These mixtures can be transferred directly with a tenfold excess of Lithium-tetramethylpiperidinide, followed by bromination with 1,1,2,2-tetrabromoethane to pentabromoferrocene (3), in an overall yield of 36% starting from ferrocene. The mol. structures of 3 and of 1,2,3-tribromoferrocene (4) have been determined by X-Ray diffraction.

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Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 1273-73-0, is researched, Molecular C10BrFe, about Kinetics of the thermal decomposition of ferrocenyl azide: character of ferrocenyl nitrene, the main research direction is ferrocenyl azide thermal decomposition kinetics; nitrene ferrocenyl.Application of 1273-73-0.

The Arrhenius parameters for the thermal decomposition of ferrocenyl azide in isooctane are A = (5.1 ± 1.4) × 1012 s-1 and Eact = 113.1 ± 0.9 (kJ mol-1) and the rate is relatively insensitive to solvent (isooctane, benzene, acetonitrile; 1:1.7:2.4). The results indicate a relatively nonpolar transition state which is considerably “”tighter”” than for a normal bond fission reaction. The Arrhenius parameters are comparable to those for aromatic azides and do not offer any support for anchimeric assistance by the iron atom. A kinetic scheme is presented which accounts for the observed products: nitrogen, ferrocene, aminoferrocene, azoferrocene, and insoluble material. Rates of hydrogen abstraction by the intermediate ferrocenyl nitrene from cyclohexane, benzene, and acetonitrile are used to show that the nitrene is nucleophilic.

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Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com

Electric Literature of C10BrFe. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: Bromoferrocene, is researched, Molecular C10BrFe, CAS is 1273-73-0, about Synthesis, structure and reactivity study of 1,1′-bis(N-tert-butyl-N-hydroxyamino)ferrocene.

The synthesis of 1,1′-bis(N-tert-butyl-N-hydroxyamino)ferrocene (1) is described, and the x-ray anal. showed eclipsed positions of the two tert-butylhydroxyamino groups. This structure can be explained by the interactions of the hydroxyl hydrogens with the N atoms of the other tert-butylhydroxyamino group. This interaction is maintained in solution and may explain that the oxidation of 1 using Ag2O gave a decomposition reaction instead of the expected 1,1′-bis(N-tert-butylaminoxy)ferrocene. The ESR spectrum of an oxidized solution of 1 showed a 1:1:1 triplet, but it corresponded only to traces of an N-O• radical. Cyclic voltammograms of 1 showed that it is more easily oxidized than ferrocene and less easily than 1,1′-diaminoferrocene, indicating that chem. oxidation of 1 occurs in the ferrocenyl part of the mol., followed by rapid decomposition

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Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com

Formula: C10BrFe. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Bromoferrocene, is researched, Molecular C10BrFe, CAS is 1273-73-0, about Ferrocene Aryl Derivatives for the Redox Tagging of Graphene Nanoplatelets. Author is Yang, Minjun; Batchelor-McAuley, Christopher; Moreira Goncalves, Luis; Lima, Carlos F. R. A. C.; Vyskocil, Vlastimil; Tschulik, Kristina; Compton, Richard G..

Aryl derivatives of ferrocene were used for the modification of graphitic surfaces. Stronger adsorption was used as a route to enable the electrochem. tagging of new C materials. Model experiments are reported on an EPPG electrode where the adsorption of 1-(biphen-4-yl)ferrocene is a factor of ∼5 times more thermodynamically favorable than the underivatised form. Two further derivatives were also studied and the voltammetric responses of this class of ferrocenes are significantly influenced by ion-pairing. Finally, the successful use of these new materials for the modification and redox tagging of graphene nanoplatelets is demonstrated.

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Thiazolidine – Wikipedia,
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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Some reactions of halogen derivatives of ferrocene. Ferrocenylamine. Ferrocenyl acetate》. Authors are Nesmeyanov, A. N.; Sazonova, V. A.; Drozd, V. N..The article about the compound:Bromoferrocenecas:1273-73-0,SMILESS:Br[C-]12[Fe+2]3456789([C-]%10C6=C7C8=C9%10)C1=C3C4=C25).Safety of Bromoferrocene. Through the article, more information about this compound (cas:1273-73-0) is conveyed.

cf. C.A. 50, 2558a; 54, 6673h. Refluxing 0.3 g. bromoferrocene (I) with 1 g. Cu(OAc)2 in 30 ml. 50% EtOH 15 min. gave 90% ferrocenyl acetate, m. 64.5-6.5° (EtOH); hydrolysis and treatment with BzCl gave ferrocenyl benzoate, m. 108.5-9.5°. Ferrocenyl acetate was similarly prepared in 84% yield from chloroferrocene. Heating 0.6 g. I with 1.5 g. Cu phthalimide 2 hrs. at 135-40° gave after extraction with Et2O 64% N-ferrocenylphthalimide, m. 156-7° (EtOH); chloroferrocene gave a 53% yield. Refluxing the imide with N2H4.H2O in EtOH under N 40 min. gave after an aqueous treatment 82% ferrocenylamine, m. 153-5°, which with Ac2O in pyridine at room temperature gave 82% N-acetylferrocenylamine, m. 169-71°. Heating I with Cu(CN)2 2 hrs. at 140° gave 84% ferrocenecarbonitrile, m. 105.5-6.5°; the yield was 42% when the reaction was run 3 hrs. in pyridine with chloroferrocene and when a small amount of the nitrile was originally present in the reaction mixture

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Thiazolidine – Wikipedia,
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In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Electronic effects in the ferrocene ring system by proton magnetic resonance spectroscopy, published in 1968, which mentions a compound: 1273-73-0, mainly applied to electronic effect ferrocene ring; ferrocene ring system PMR; ring system ferrocene PMR; PMR ferrocene ring system, Reference of Bromoferrocene.

Results of a proton magnetic resonance study of the chem. shifts of ring protons of representative monosubstituted ferrocene compounds are reported. The substituents cover a span from strongly electron-donating groups to strongly electron-withdrawing. Some relations appear to exist between the ring-proton chem. shifts in these compounds and those reported for the corresponding monosubstituted benzene compounds The chem. shifts recorded were precisely measured. As such, they serve to revise the data reported while this work was in progress. 15 references.

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Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com