Tag: M.W:200-300

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: 2-(7-Bromo-1H-indol-3-yl)acetic acid, is researched, Molecular C10H8BrNO2, CAS is 63352-97-6, about Growth of Avena coleoptiles and pH drop of protoplast suspensions induced by chlorinated indoleacetic acids.COA of Formula: C10H8BrNO2.

Several indoleacetic acids, substituted in the benzene ring, were compared in the Avena straight growth bioassay. 4-Chloroindoleacetic acid (I) [2519-61-1], a naturally occurring plant hormone, was one of the strongest hormones in this bioassay. With an optimum at 10-6 mol/L, it was more active than indoleacetic acid [87-51-4], 2,4-dichlorophenoxyacetic acid [94-75-7], and naphthaleneacetic acid [86-87-3]. 5-Chloro- [1912-45-4] and 6-chloroindoleacetic acid [1912-44-3] are very strong auxins as well. Other derivatives tested have a lower activity. 5,7-Dichloro- [1912-40-9] and 5-hydroxyindoleacetic acid [54-16-0] have very low auxin activity at 10-4 mol/L and may be antiauxins. Some of the derivatives were compared for their effect on pH decline in stem protoplast suspensions of Helianthus annuus and Pisum sativum. The change of pH occurs without a lag period or with only a very short one. Derivatives which are very active in the Avena straight growth assay cause a larger pH decline than indoleacetic acid, while inactive derivatives cause effectively no pH decline.

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Category: thiazolidine. 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 Oxidation kinetics of ferrocene derivatives with dibenzoyl peroxide. Author is Halstead, Joshua M.; Abu-Saleh, Refaat; Schildcrout, Steven M.; Masnovi, John.

Chem. oxidation of ferrocene and related derivatives by dibenzoyl peroxide in acetonitrile solution produces ferrocenium and benzoic acid after acidification. The rate law is first order in oxidant and in reductant. Steric effects and activation parameters are consistent with a rate-controlling outer-sphere single-electron transfer (ET) step, and reorganization energies are obtained using Marcus theory with B3LYP calculations Energetics, optimized structures, and solvent effects indicate that rate is affected more by anion than cation solvation and that oxidation of decamethylferrocene by 3-chloroperoxybenzoic acid does not occur by ET.

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COA of Formula: C13H15F3N2O. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: (R)-4-(tert-Butyl)-2-(5-(trifluoromethyl)pyridin-2-yl)-4,5-dihydrooxazole, is researched, Molecular C13H15F3N2O, CAS is 1428537-19-2, about Enantioselective N-Alkylation of Indoles via an Intermolecular Aza-Wacker-Type Reaction. Author is Allen, Jamie R.; Bahamonde, Ana; Furukawa, Yukino; Sigman, Matthew S..

In the presence of Pd(MeCN)2(OTs)2 and a nonracemic pyridinyloxazoline, 3-substituted indoles such as 3-phenylindole underwent intermol., chemoselective, and enantioselective alkylation/aza-Wacker reactions with cis-allylic and cis-homoallylic alcs. such as (Z)-EtCH:CHCH2OH mediated by p-benzoquinone in 1,2-dichloroethane to yield nonracemic β- and γ-(1-indolyl)alkanals such as I; enamines generated under other conditions were not formed. The mechanism was studied using the reaction of a deuterium-labeled allylic alc.; the stereochem. of the product supported a syn amino-palladation mechanism for the reaction.

In some applications, this compound(1428537-19-2)COA of Formula: C13H15F3N2O is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.

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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, Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya called Ferrocenylgold-triphenylphosphine, Author is Nesmeyanov, A. N.; Perevalova, E. G.; Lemenovskii, D. A.; Kosina, A. N.; Grandberg, K. I., the main research direction is gold ferrocenyl phosphines; ferrocenyl phosphines gold; phosphines gold ferrocenyl; ferrocenes; iron organic compound.Name: Bromoferrocene.

To ferrocenyllithium from 2.8 g ferrocene in THF-Et2O with BuLi under argon was added 2 g ClAuPPh3, and after 2 hr the mixture quenched in H2O to yield 81% orange ferrocenyl-goldtriphenylphosphine, C5H5FeC5H4AuPPh3, decomposed 150°; ir and NMR spectral data given. Chromatog. on Al2O3 decomposed this to ferrocene. BrAuPPh3 in the above reaction gave the same complex in 67% yield. Treated with dry HCl in C6H6 the product gave ferrocene and ClAuPPh3, m. 242-3°; HI gave diferrocenyl in trace amounts along with nearly 100% ferrocene and IAuPPh3, m. 224-5°. HCN similarly converted the complex into ferrocene and AuCN.PPh3, m. 203.5-204°. Bromination gave bromoferrocene, m. 30-1°, and 81% BrAuPPh3. ClAuPPh3 in Et2O under argon treated with BuLi 5 hr gave 86% oily BuAuPPh3, which darkened in air. It was purified by freezing in liquid pentane at -70°.

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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 Electronic effects in the ferrocene ring system by proton magnetic resonance spectroscopy. Author is Slocum, D. W.; Engelmann, T. R.; Lewis, Robert; Kurland, R. J..

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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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: 1428537-19-2, is researched, Molecular C13H15F3N2O, about C3-Arylation of indoles with aryl ketones via C-C/C-H activations, the main research direction is arylindole preparation regioselective; indole aryl ketone arylation palladium catalyst carbon hydrogen activation.Category: thiazolidine.

C3-Arylation of indoles with aryl ketones is accomplished via palladium-catalyzed ligand-promoted Ar-C(O) cleavage and subsequent C-H arylation of indole. Various (hetero)aryl ketones are compatible in this reaction, affording the corresponding 3-arylindoles in moderate to good yields. Further introduction of an indole moiety into the natural products desoxyestrone and evodiamine demonstrate the synthetic utility of this protocol.

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Name: Bromoferrocene. 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 Electron transfer in mixed-valence 1′,6′-bis(triphenylmethyl)biferrocenium triiodide. Author is Dong, Teng Yuan; Hsu, Tsui Ling.

The 1′,6′-bis(triphenylmethyl)biferrocenium triiodide (I) was prepared The intramol. electron transfer rates in the solid state and in solution have been determined I gives a Moessbauer spectrum which reveals the presence of localized and delocalized species. An investigation of the energy and the line-shape of the intervalence transition band, permitted the calculation of the electron transfer rate in solution

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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.Related Products of 1428537-19-2.Allen, Jamie R.; Bahamonde, Ana; Furukawa, Yukino; Sigman, Matthew S. published the article 《Enantioselective N-Alkylation of Indoles via an Intermolecular Aza-Wacker-Type Reaction》 about this compound( cas:1428537-19-2 ) in Journal of the American Chemical Society. Keywords: indolylalkanal chemoselective enantioselective preparation; chemoselective enantioselective aza Wacker reaction allylic homoallylic alc indole; enantioselective alkylation indole allylic homoallylic alc palladium catalyst; stereochem mechanism aza Wacker reaction deuterated allylic alc indole. Let’s learn more about this compound (cas:1428537-19-2).

In the presence of Pd(MeCN)2(OTs)2 and a nonracemic pyridinyloxazoline, 3-substituted indoles such as 3-phenylindole underwent intermol., chemoselective, and enantioselective alkylation/aza-Wacker reactions with cis-allylic and cis-homoallylic alcs. such as (Z)-EtCH:CHCH2OH mediated by p-benzoquinone in 1,2-dichloroethane to yield nonracemic β- and γ-(1-indolyl)alkanals such as I; enamines generated under other conditions were not formed. The mechanism was studied using the reaction of a deuterium-labeled allylic alc.; the stereochem. of the product supported a syn amino-palladation mechanism for the reaction.

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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 Enhanced Electron-Transfer Reactivity of Nonheme Manganese(IV)-Oxo Complexes by Binding Scandium Ions. Author is Yoon, Heejung; Lee, Yong-Min; Wu, Xiujuan; Cho, Kyung-Bin; Sarangi, Ritimukta; Nam, Wonwoo; Fukuzumi, Shunichi.

One and two scandium ions (Sc3+) are bound strongly to nonheme manganese(IV)-oxo complexes, [(N4Py)MnIV(O)]2+ (N4Py = N,N-bis(2-pyridylmethyl)-N-bis(2-pyridyl)methylamine) and [(Bn-TPEN)MnIV(O)]2+ (Bn-TPEN = N-benzyl-N,N’,N’-tris(2-pyridylmethyl)-1,2-diaminoethane), to form MnIV(O)-(Sc3+)1 and MnIV(O)-(Sc3+)2 complexes, resp. The binding of Sc3+ ions to the MnIV(O) complexes was examined by spectroscopic methods as well as by DFT calculations The one-electron reduction potentials of the MnIV(O) complexes were markedly shifted to a pos. direction by binding of Sc3+ ions. Accordingly, rates of the electron transfer reactions of the MnIV(O) complexes were enhanced as much as 107-fold by binding of two Sc3+ ions. The driving force dependence of electron transfer from various electron donors to the MnIV(O) and MnIV(O)-(Sc3+)2 complexes was examined and analyzed in light of the Marcus theory of electron transfer to determine the reorganization energies of electron transfer. The smaller reorganization energies and much more pos. reduction potentials of the MnIV(O)-(Sc3+)2 complexes resulted in remarkable enhancement of the electron-transfer reactivity of the MnIV(O) complexes. Such a dramatic enhancement of the electron-transfer reactivity of the MnIV(O) complexes by binding of Sc3+ ions resulted in the change of mechanism in the sulfoxidation of thioanisoles by MnIV(O) complexes from a direct oxygen atom transfer pathway without metal ion binding to an electron-transfer pathway with binding of Sc3+ ions.

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Synthesis and isomerization of 4-hydroxy-4-methyl-3-hepten-6-yn-2-yl-cyclopentadienylmanganese tricarbonyl》. Authors are Anisimov, K. N.; Kolobova, N. E.; Magomedov, G. K. I..The article about the compound:Bromoferrocenecas:1273-73-0,SMILESS:Br[C-]12[Fe+2]3456789([C-]%10C6=C7C8=C9%10)C1=C3C4=C25).Formula: C10BrFe. Through the article, more information about this compound (cas:1273-73-0) is conveyed.

cf. CA 61, 13336f. Propargyl bromide added in Et2O to Mg activated with HgCl2 gave a solution of the Grignard reagent which with 2-penten-4-on-2-ylcyclopentadienylmanganese tricarbonyl in 3 h. refluxing gave 81% I, b0.007 85-6°, n20D 1.5945, d20 1.2936; ir spectrum and uv spectrum shown. Heated with KHSO4 in vacuo to 100-20°, I gave 50% yellow 4-methyl-2,4-heptadien-6-on-2-ylcyclopentadienylmanganese tricarbonyl, b0.007 95-6°, 1.6112, 1.3030, also formed from I by heating in EtOH with HgSO4; ir spectrum shown. The ketone was unstable in air, but gave a red 2,4-dinitrophenylhydrazone, m. 156°.

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