Month: April 2022

Quality Control of Nickel(ii)fluoridetetrahydrate. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Nickel(ii)fluoridetetrahydrate, is researched, Molecular F2H8NiO4, CAS is 13940-83-5, about Mechanism of film formation on nickel anodes in a molten NH4F.2HF. Author is Tasaka, A.; Tsukuda, Y.; Yamada, S.; Matsushita, K.; Kohmura, A.; Muramatsu, N.; Takebayashi, H.; Mimaki, T..

The mechanism of film formation on the Ni anode in a well dehydrated melt of NH4F.2HF was studied at 1000C. The potentiodynamic and potentiostatic polarization behaviors of the Ni anode were studied to elucidate the anodic processes. The oxidized layer was composed of NiF2 with a small amount of nickel oxides such as NiO and Ni2O3 or oxyfluorides having plural oxidation states and a highly oxidized nickel fluoride formed on the Ni anode polarized at potentials >4.5 V vs. H2 and it grew thicker through the repetition of the alternate formation and degradation with the time of electrolysis. The composition and the thickness of the oxidized layer may reflect on the c.d. on the nickel anode under polarization.

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Joergensen, Christian K. published the article 《Photoelectron spectrometry of inorganic solid》. Keywords: photoelectron spectrometry inorganic solid; Hartree potentials photoelectron spectrometry; Madelung potential ionic compound.They researched the compound: Nickel(ii)fluoridetetrahydrate( cas:13940-83-5 ).Application of 13940-83-5. 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:13940-83-5) here.

A discussion ia given of the highly different probability of ionization of each shell of a given element by x-ray photons. The chem. shift of ionization energies I indicate differing Hartree potentials. The multiple I of an inner shell in systems having pos. spin quantum number S were studied in 11 high-spin Ni(II) compounds Scotch tape was used as internal standard The Madelung potential in almost ionic compounds and the relation between optical electronegativities and I of valence electrons are treated.

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Quinoxaline – Wikipedia,
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Formula: C38H34N2O4P2. 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: (R)-2,2′,6,6′-Tetramethoxy-4,4′-bis(diphenylphosphino)-3,3′-bipyridine, is researched, Molecular C38H34N2O4P2, CAS is 221012-82-4, about Asymmetric hydroformylation of styrene catalyzed by P-Phos-Rh complexes [P-Phos = 4,4′,6,6′-tetramethoxy-2,2′-bis(diphenylphosphino)-1,1′-bipyridine].

Rh complex was prepared by complexation of (R)-P-Phos with the available Rh precursor and used for the asym. hydroformylation of styrene. The effects of total pressure, temperature, and the ratio of phosphine/Rh on catalytic activity, chemo- and enantioselectivity were discussed. (R)-P-Phos-Rh showed higher activity and regioselectivity and the enantioselectivity was as much as that catalyzed by -BINAP-Rh (BINAP = 2,2′-di(diphenylphosphino)-1,1′-bipyridine) in the in situ asym. hydroformylation of styrene.

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Category: quinoxaline. 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: (S)-Propane-1,2-diamine dihydrochloride, is researched, Molecular C3H12Cl2N2, CAS is 19777-66-3, about Modified amino acids and peptides. Part 2. A convenient conversion of amino and peptide alcohols into amines.

A convenient general method for the conversion of N-protected amino and peptide alcs. RNHCHR1CH2R2 (I; R = Z, Boc, Z-Ala, R1 = H, PhCH2, Me, CH2CHMe2, R2 = OH; Z = PhCH2O2C, Boc = Me3CO2C) into amines I (R2 = NH2, NEt2) is described. Thus, treatment of I (R = OH) with MeSO2Cl gave the corresponding mesylates, which underwent substitution with HNEt2 to give I (R2 = NEt2) or NaN3 to give the corresponding azides I (R2 = N3). Hydrogenation of I (R2 = N3) gave the corresponding monoprotected diamines I (R = Boc, R2 = NH2) or free diamines I (R = H, R2 = NH2), depending on the protecting group. Selective reduction of the azido group in I (R = Z, R2 = N3) was performed in high yield using NaBH4 in the presence of 10% Pd/C to give I (R = Z, R2 = NH2).

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Carmona, A.; Corma, A.; Iglesias, M.; Sanchez, F. published the article 《Synthesis and characterization of chiral Cu(I) complexes of substituted pyrrolidine ligands. Efficient catalysts for cyclopropanation reactions》. Keywords: chiral copper complex substituted pyrrolidine catalyst; cyclopropanation catalyst chiral copper substituted pyrrolidine; styrene cyclopropanation chiral copper substituted pyrrolidine.They researched the compound: Chloro(1,5-cyclooctadiene)copper(I) dimer( cas:32717-95-6 ).Quality Control of Chloro(1,5-cyclooctadiene)copper(I) dimer. 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:32717-95-6) here.

A series of new copper(I) complexes of chiral bidentate N,N’-ligands ((S)-2-t-butylaminocarbonylpyrrolidine, (S)-1,2-(bis-t-butyl-aminocarbonyl)pyrrolidine, (S)-1-t-butylaminocarbonyl-2-(1-naphthylaminocarbonyl)pyrrolidine, (S)-1-t-butylaminocarbonyl-2-(1-naphthylaminomethyl)pyrrolidine, (2S,4S)-1,2-(bis-t-butylaminocarbonyl)-4-aminopyrrolidine) of general formula [Cu(CH3CN)(L-L)]X (X = PF6, ClO4) have been synthesized and fully characterized by elemental anal., IR, electronic and NMR spectroscopy. These complexes catalyze the cyclopropanation of styrene, used as a model for monosubstituted olefins, with Et diazoacetate to yield a mixture of cis/trans Et 2-phenylcyclopropan-1-carboxylates with up to 30% ee.

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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 Discovery of Ipragliflozin (ASP1941): A novel C-glucoside with benzothiophene structure as a potent and selective sodium glucose co-transporter 2 (SGLT2) inhibitor for the treatment of type 2 diabetes mellitus, published in 2012-05-15, which mentions a compound: 57825-30-6, mainly applied to Ipragliflozin ASP1941 aryl glucoside benzothiophene preparation antidiabeteic SGLT2 mellitus, Electric Literature of C9H11Br.

A series of C-glucosides with various heteroaromatics has been synthesized and its inhibitory activity toward SGLTs was evaluated. Upon screening several compounds, the benzothiophene derivative I (R =H) was found to have potent inhibitory activity against SGLT2 and good selectivity vs. SGLT1. Through further optimization of 14a, a novel benzothiophene derivative I (R = F) (ipragliflozin, ASP1941) was discovered as a highly potent and selective SGLT2 inhibitor that reduced blood glucose levels in a dose-dependent manner in diabetic models KK-Ay mice and STZ rats.

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Name: (4-(Pyridin-4-yl)phenyl)methanol. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: (4-(Pyridin-4-yl)phenyl)methanol, is researched, Molecular C12H11NO, CAS is 217192-22-8, about Colour coding the co-conformations of a [2]rotaxane flip-switch. Author is Suhan, Natalie D.; Allen, Laura; Gharib, Mireille T.; Viljoen, Elizabeth; Vella, Sarah J.; Loeb, Stephen J..

Fine-tuning the charge transfer chromophores in a series of [2]rotaxane flip-switches yields a unique optical signal (purple color) for one of the interactions allowing for facile determination of the position of the flip-switch equilibrium

In some applications, this compound(217192-22-8)Name: (4-(Pyridin-4-yl)phenyl)methanol is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.

Reference:
Quinoxaline – 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 《Novel spiroborates and a dipole moment study of 1,3,2 dioxaboraazulene-2-spiro-2′-(1′,3′,2′-benzodioxaborole)》. Authors are Balaban, A. T.; Bally, Ioana; Bishop, R. J.; Rentea, C. N.; Sutton, L. E..The article about the compound:8-Hydroxyquinoline 1-oxidecas:1127-45-3,SMILESS:OC1=CC=CC2=CC=C[N+]([O-])=C12).Product Details of 1127-45-3. Through the article, more information about this compound (cas:1127-45-3) is conveyed.

The large dipole moment (8.24 D.) of 5(7)-methyl-1,3,2-dioxaboraazulene-2-spiro-2′-(1′,3′,2′-benzodioxaborole) (I) confirms the spiran co-ordinated structure previously suggested. Stable spiroborates are formed from butoxy-benzodioxaborole with 8-hydroxyquinoline or its N-oxide, but not with 3-hydroxy-γ-pyrone.

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Quinoxaline – 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 《Tracer studies on the extraction of metal ions. III. Extraction of manganese(II), iron(III), cobalt(II), copper(II), and zinc(II) with 8-hydroxyquinoline N-oxide》. Authors are Mikulski, J..The article about the compound:8-Hydroxyquinoline 1-oxidecas:1127-45-3,SMILESS:OC1=CC=CC2=CC=C[N+]([O-])=C12).Application of 1127-45-3. Through the article, more information about this compound (cas:1127-45-3) is conveyed.

8-Hydroxyquinoline N-oxide extract less Mn(II), Fe(III), and Co(II) than does 8-hydroxyquinoline, and the extraction takes place in a lower pH range. Zn was not extracted at all. The tracers were 54Mn, 59Fe, 60Co, 64Cu, and 65Zn. Cf. CA 60, 11569a.

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Reference:
Quinoxaline – Wikipedia,
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Recommanded Product: Chloro(1,5-cyclooctadiene)copper(I) dimer. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Chloro(1,5-cyclooctadiene)copper(I) dimer, is researched, Molecular C16H16Cl2Cu2, CAS is 32717-95-6, about Organometallic chemistry. VI. Meerwein reaction. IV. Mechanistic aspects. Author is Al Adel, I.; Adeoti Salami, B.; Levisalles, J.; Rudler, H..

The key step in the Meerwein reaction of p-ClC6H4N2+ salts in the presence of unsaturated compounds is formation of aryl radicals; complexation of the Cu(I) salt with the unsaturated compound plays only a minor role. Thus, treatment of RCuCl or R2CuBF4 (R = cyclooctadiene) with p-ClC6H4N2+X- (X = Cl, BF4) gives no Meerwein products. Similarly, treatment of CH2:CHCH2OH, which complexes easily with Cu, with p-ClC6H4N2+ and a Cu(I) catalyst gives only 5% of the Meerwein product p-ClC6H4CH2CHClCH2OH. On the other hand, the Meerwein reaction of CH2:CH(CH2)2CH2OH with p-ClC6H4N2+ gives the Meerwein product p-ClC6H4CH2CHCl(CH2)2CH2OH, I [via an aryl intermediate oxidized to a carbocation by Cu(I)], as well as p-ClC6H4N:NCH(CH2C6H4Cl-p)(CH2)2CH2OH and II.

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Reference:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider