Tag: M.W:200-300

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 1273-73-0, is researched, SMILESS is Br[C-]12[Fe+2]3456789([C-]%10C6=C7C8=C9%10)C1=C3C4=C25, Molecular C10BrFeJournal, Journal of Organometallic Chemistry called Synthesis of diferrocenylglyoxime and some of its transition-metal complexes, Author is Ertas, Mumtaz; Koray, Ali R.; Ahsen, Vefa; Bekaroglu, Ozer, the main research direction is ferrocenylglyoxime preparation reaction transition metal; glyoxime diferrocenyl preparation reaction; transition metal complex diferrocenylglyoxime.Name: Bromoferrocene.

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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Thiazolidine – Wikipedia,
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Category: thiazolidine. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Bromoferrocene, is researched, Molecular C10BrFe, CAS is 1273-73-0, about Monohalogenated ferrocenes C5H5FeC5H4X (X = Cl, Br and I) and a second polymorph of C5H5FeC5H4I. Author is Romanov, Alexander S.; Mulroy, Joseph M.; Khrustalev, Victor N.; Antipin, Mikhail Yu.; Timofeeva, Tatiana V..

The structures of the three title monosubstituted ferrocenes, 1-chloroferrocene, [Fe(C5H5)(C5H4Cl)], (I), 1-bromoferrocene, [Fe(C5H5)(C5H4Br)], (II), and 1-iodoferrocene, [Fe(C5H5)(C5H4I)], (III), were determined at 100 K. The chloro- and bromoferrocenes are isomorphous crystals. The new triclinic polymorph [space group P1̅, Z = 4, T = 100 K] of iodoferrocene, (III), and the previously reported monoclinic polymorph of (III) were obtained by crystallization from EtOH solutions at 253 and 303 K, resp. All four phases contain two independent mols. in the unit cell. The relative orientations of the cyclopentadienyl (Cp) rings are eclipsed and staggered in the independent mols. of (I) and (II), while (III) demonstrates only an eclipsed conformation. The triclinic and monoclinic polymorphs of (III) contain nonbonded intermol. I···I contacts, causing different packing modes. In the triclinic form of (III), the mols. are arranged in zigzag tetramers, while in the monoclinic form the mols. are arranged in zigzag chains along the a axis. Crystallog. data for (III), along with the computed lattice energies of the two polymorphs, suggest that the monoclinic form is more stable.

In addition to the literature in the link below, there is a lot of literature about this compound(Bromoferrocene)Category: thiazolidine, illustrating the importance and wide applicability of this compound(1273-73-0).

Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Bromoferrocene, is researched, Molecular C10BrFe, CAS is 1273-73-0, about Ring opening of ferrocenyl-substituted cyclopropanes.COA of Formula: C10BrFe.

Treating a mixture of isomeric ferrocenyl-substituted cyclopropanes I (R = Fc throughout this abstract) with excess Ph3CBF4 in CH2Cl2 gave a 2:1 mixture of endo and exo isomers of diferrocenyl-substituted cyclohexene II, formed by cyclodimerization of the initially formed butadiene. Cleavage of 3-methyl-3-ferrocenylcyclopropene with CF3CO2H followed by trapping with excess Me2NPh gave a mixture of E- and Z-4-Me2NC6H4CH2CH:CRMe. A mechanism involving ferrocenyl-stabilized carbocation formation is proposed.

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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 Oxidative purification of halogenated ferrocenes, the main research direction is halogenated ferrocene preparation oxidative purification.Name: Bromoferrocene.

Authors report the large scale syntheses and oxidative purification’ of fcI2, fcBr2 and FcBr (fc = ferrocene-1,1′-diyl, Fc = ferrocenyl). These valuable starting materials are typically laborious to sep. via conventional techniques, but can be readily isolated by taking advantage of their increased E1/2 relative to FcH/FcX contaminants. The work extends this methodol. towards a generic tool for the separation of redox active mixtures

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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 《Quinolinium thiocyanate》. Authors are Hurd, Charles D.; Wehrmeister, H. L..The article about the compound:quinoliniumhydrogensulphatecas:530-66-5,SMILESS:[O-]S(=O)(O)=O.C12=CC=C[NH+]=C1C=CC=C2).Quality Control of quinoliniumhydrogensulphate. Through the article, more information about this compound (cas:530-66-5) is conveyed.

The reaction of BzCl with quinoline (I) and CHNa(CO2Et)2 did not yield the desired 1,2-dihydroquinoline, since most of the I was recovered; the products (as determined by hydrolysis) are CHBz(CO2Et)2 and Bz(BzO)C:C(CO2Et)2. I (63 g.) and 156 g. KSCN in 600 ml. H2O, treated (7 min.) with 148 g. BzCl and stirred 1 hr., give 77% quinolinium thiocyanate, light yellow, m. 141-1.5°; FeCl3 gives a deep red color; heated 1 hr. on the steam bath with concentrated HCl it yields quinolinium H sulfate, m. 162-4°.

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Product Details of 1273-73-0. 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 Assignment of 1H NMR chemical shifts in 1,2- and 1,1′-disubstituted ferrocenes. Author is Pickett, Tom E.; Richards, Christopher J..

The effect of 29 commonly encountered substituents on the chem. shifts of α, β and C5H5 positions in monosubstituted ferrocenes are tabulated and employed for determining 1H NMR assignments in 1,2- and 1,1′-disubstituted ferrocene derivatives

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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 《Ferrocenylboronic and 1,1′-ferrocenylenediboronic acids and their reactions》. 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).SDS of cas: 1273-73-0. Through the article, more information about this compound (cas:1273-73-0) is conveyed.

The reactions were run under N. To 92 g. (BuO)3B in Et2O was added with Dry Ice cooling an ethereal solution of ferrocenyl-Li prepared from 17.6 g. ferrocene by treatment with BuLli (from 39 g. BuCl and 7.6 g. Li). The mixture was allowed to come to room temperature; on the following day it was treated with aqueous H2SO4 and the organic layer extracted with aqueous KOH. The alk. extracts on acidification gave first 2.9 g. 1,1′-ferrocenylenediboronic acid (I) (total yield 13%), decomposing at 180°, then ferrocenylboronic acid (II), 26% yield, m. 1438°. The latter refluxed with aqueous ZnCl2 gave ferrocene; the diboronic acid is hydrolyzed similarly. Treatment of II with hot aqueous acetone solution of HgCl2 gave 76% yellow ferrocenylmercuric chloride, decompose 192-4° (from xylene). Similarly aqueous CuCl2 gave 84% chloroferrocene, m. 59-60° (from EtOH). CuBr2 gave 80% bromoferrocene, m. 32-3°. I and aqueous CuCl2 gave 1,1′-dichloroferrocene, m. 75-7° (from EtOH); CuBr2 gave 76% 1,1′-dibromoferrocene, m. 50-1° (from EtOH). Treatment of II with ammoniacal solution of Ag2O gave metallic Ag, and extraction with Et2O gave 52% diferrocenyl, decomposing 230°, along with 31% ferrocene. Diferrocenyl is sparingly soluble in petr. ether, soluble in MePh, C6H6, dioxane, and tetrahydrofuran.

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Thiazolidine – Wikipedia,
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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: (R)-4-(tert-Butyl)-2-(5-(trifluoromethyl)pyridin-2-yl)-4,5-dihydrooxazole( cas:1428537-19-2 ) is researched.COA of Formula: C13H15F3N2O.Khan, Ismat Ullah; Kattela, Shivashankar; Hassan, Abbas; Correia, Carlos Roque Duarte published the article 《Enantioselective total synthesis of the highly selective sphingosine-1-receptor VPC01091 by the Heck desymmetrization of a non-activated cyclopentene-fused spiro-pyrrolidinone》 about this compound( cas:1428537-19-2 ) in Organic & Biomolecular Chemistry. Keywords: stereoselective Heck Matsuda desymmetrization cyclopentene fused spiropyrrolidinone arenediazonium tetrafluoroborate; enantioselective total synthesis VPC01091. Let’s learn more about this compound (cas:1428537-19-2).

A novel, efficient and enantioselective Heck-Matsuda desymmetrization of non-activated cyclopentene-fused spiro-pyrrolidinones was developed. The reaction provided the Heck products in good to excellent yields and selectivities and tolerated a variety of functional groups in arenediazonium tetrafluoroborates (12 examples) with respect to its electronics and substitution patterns. This methodol. was successfully applied in the concise enantioselective total synthesis of VPC01091 (I), a drug candidate for the treatment of multiple sclerosis.

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The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Bromoferrocene, is researched, Molecular C10BrFe, CAS is 1273-73-0, about Redox-Rich Metallocene Tetrazene Complexes: Synthesis, Structure, Electrochemistry, and Catalysis, the main research direction is cobaltocene ferrocene tetrazene cobalt complex preparation electronic structure; electrolysis catalyst proton reduction cobaltocene tetrazene cobalt complex.Formula: C10BrFe.

Thermal or photochem. metal-centered cycloaddition reactions of azidocobaltocenium hexafluorophosphate or azidoferrocene with (cyclooctadiene)(cyclopentadienyl)Co(I) afforded the first metallocenyl-substituted tetrazene cyclopentadienyl cobalt complexes together with azocobaltocenium or azoferrocene as side products. The trimetallic CpCo compounds are highly conjugated, colored and redox-active metallo-aromatic compounds, as shown by their spectroscopic, structural and electrochem. properties. The CpCo-tetrazenido complex with two terminally appended cobaltocene units catalyzes electrochem. proton reduction from acetic acid at a mild overpotential (0.35 V). Replacing cobaltocene with ferrocene moieties rendered the complex inactive toward catalysis.

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Thiazolidine – Wikipedia,
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Synthetic Route of C10BrFe. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Bromoferrocene, is researched, Molecular C10BrFe, CAS is 1273-73-0, about Reactions of haloferrocenes. III. Reaction of haloferrocenes with copper(I) benzenethiolate, thiocyanate, acetate, and benzoate. Author is Sato, Masaru; Motoyama, Izumi; Hata, Kazuo.

Iodoferrocene reacted with copper(I) benzenethiolate in boiling pyridine to give ferrocenyl Ph sulfide in a quant. yield. The reaction of iodoferrocene with copper(I) thiocyanate gave diferrocenyl disulfide. The behavior of copper(I) acetate and benzoate toward haloferrocene was different from those of the other copper(I) salts: reactions in boiling pyridine gave the corresponding ferrocenyl ester, together with a small quantity of ferrocene, while the reaction in boiling toluene produced biferrocenyl as the main product. The reaction mechanism of the ferrocenyl ester and biferrocenyl formations was discussed.

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Thiazolidine – Wikipedia,
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