Tag: M.W=100-200

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Dihydropyridines. XII. Electronic structure and reactivity of monocyanopyridines and symmetric dicyanopyridines》. Authors are Kuthan, J..The article about the compound:Pyridine-3,5-dicarbonitrilecas:1195-58-0,SMILESS:N#CC1=CC(C#N)=CN=C1).Safety of Pyridine-3,5-dicarbonitrile. Through the article, more information about this compound (cas:1195-58-0) is conveyed.

cf. CA 65, 3828a. The electronic structure of 2-cyanopyridine, 3-cyanopyridine, 4-cyanopyridine, 2,6-dicyanopyridine, and 3,5-dicyanopyridine were studied by means of the simple mol. orbital theory (HMO). The reactivity of these compounds toward nucleophilic reagents is discussed with respect to possible formation of corresponding dihydro derivatives or products with transformed functional groups. Ir, N.M.R., and uv spectra of the compounds studied are compared with the calculated values for the bond orders, π-electron densities, and with the theoretical excitation energies. Bond orders and π-electron densities as calculated on the basis of HMO-approximation are correlated with analogous data obtained by the self-consistent-field method.

Here is just a brief introduction to this compound(1195-58-0)Safety of Pyridine-3,5-dicarbonitrile, more information about the compound(Pyridine-3,5-dicarbonitrile) is in the article, you can click the link below.

Reference:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

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.Ebrahimi, A.; Habibi-Khorasani, S. M.; Jahantab, M. researched the compound: Pyridine-3,5-dicarbonitrile( cas:1195-58-0 ).Reference of Pyridine-3,5-dicarbonitrile.They published the article 《Additivity of substituent effects on the proton affinity and gas-phase basicity of pyridines》 about this compound( cas:1195-58-0 ) in Computational & Theoretical Chemistry. Keywords: pyridine substituent effect additivity proton affinity gas phase basicity. We’ll tell you more about this compound (cas:1195-58-0).

The change in the proton affinity (PA) and basicity (GB) of pyridine with substituents have been considered by quantum mech. methods at the B3LYP/6-311++G(d,p) level of theory. The PA and GB values increase by the electron-donating substituents and decrease by the electron-withdrawing substituents. The effects of substituents on the PA and GB are approx. additive. The deviations of changes that are predicted from the additivity of substituent effects are generally lower than 30% from the calculated changes. Linear relationships are observed between the calculated PA values of substituted pyridines and the topol. properties of electron d., the mol. electrostatic potentials (MEP), and the N-H bond lengths. In addition, well-defined relations are established between the calculated PA values and the Hammett constants, and the reaction constant (ρ) has been calculated for the protonation reaction. With some exceptions, the effect of substituents are also additive on the electron d. and its Laplacian calculated at N-H BCP, and the MEP values calculated around the N atom.

Here is just a brief introduction to this compound(1195-58-0)Reference of Pyridine-3,5-dicarbonitrile, more information about the compound(Pyridine-3,5-dicarbonitrile) is in the article, you can click the link below.

Reference:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

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: 1195-58-0, is researched, SMILESS is N#CC1=CC(C#N)=CN=C1, Molecular C7H3N3Journal, Izvestiya Akademii Nauk Kazakhskoi SSR, Seriya Khimicheskaya called Synthesis and reactions of 3-methyl-5-cyanopyridine under oxidative ammonolysis conditions, Author is Suvorov, B. V.; Belova, N. A., the main research direction is ammoxidation lutidine vanadia titania catalyst; cyanomethylpyridine preparation catalyst; methyl nicotinonitrile preparation catalyst; pyridine cyano methyl preparation catalyst.Safety of Pyridine-3,5-dicarbonitrile.

V2O5-TiO2 (1:32) was recommended over 1:16 V2O5-TiO2, 1:0.5 V2O5-SnO2 and 2:1 V2O5-Fe2O3 for the title synthesis, >90% selectivity with 100% 3,5-butadiene (I) conversion at 340° with 1:24:10:10-40 I-O2-NH3-H2O. The 3,5-dicyanopyridine yield was 4.2-5.3% under these conditions, but reached 65.2% at 380° in the absence of H2O.

Here is just a brief introduction to this compound(1195-58-0)Safety of Pyridine-3,5-dicarbonitrile, more information about the compound(Pyridine-3,5-dicarbonitrile) is in the article, you can click the link below.

Reference:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

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 Molecular orbital study of the NMR and electronic spectra of monocyanopyridines, dicyanopyridines, and 2,4,6-tricyanopyridine, published in 1970, which mentions a compound: 1195-58-0, mainly applied to mol orbitals cyaonopyridines; cyanopyridines mol orbitals; orbitals mol cyanopyridines; NMR cyanopyridines; electronic spectra cyanopyridines, Recommanded Product: Pyridine-3,5-dicarbonitrile.

The Hueckel MO and SCF methods gave identical results in the determination of quantum-chem. characteristics of 10 cyanopyridines. A good agreement between the exptl. absorption curves and electronic transitions, calculated by the limited configuration interaction (LCI) method, was obtained in the electronic spectra. In the PMR spectra, there was an improved correlation with the exptl. data in the use of the SCF method only in the case of chem. shifts and π-electron d. The application of the SCF orbitals in the place of Hueckel MO in the LCI calculation of the electronic spectra did not improve significantly the description of the π-electron structure of the compounds studied.

Here is just a brief introduction to this compound(1195-58-0)Recommanded Product: Pyridine-3,5-dicarbonitrile, more information about the compound(Pyridine-3,5-dicarbonitrile) is in the article, you can click the link below.

Reference:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

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.Belova, N. A.; Suvorov, B. V.; Kagarlitskii, A. D. researched the compound: Pyridine-3,5-dicarbonitrile( cas:1195-58-0 ).Related Products of 1195-58-0.They published the article 《Oxidative ammonolysis of 3,5-lutidine on vanadium oxide contacts modified by additives of tin and titanium oxides》 about this compound( cas:1195-58-0 ) in Izvestiya Akademii Nauk Kazakhskoi SSR, Seriya Khimicheskaya. Keywords: lutidine ammoxidation metal oxide; vanadium oxide ammoxidation lutidine; tin oxide ammoxidation lutidine; titanium oxide ammoxidation lutidine. We’ll tell you more about this compound (cas:1195-58-0).

Ammoxidation of 3,5-lutidine on the title catalysts at 340-420° gave 5-methylnicotinonitrile (I) and 3,5-pyridinedicarbonitrile (II) in yields as high as 85 and 65%, resp. At the lower temperatures and contact times, II was formed sequentially via I, but under the more drastic conditions II could also be formed directly from 3,5-lutidine.

Compound(1195-58-0)Related Products of 1195-58-0 received a lot of attention, and I have introduced some compounds in other articles, similar to this compound(Pyridine-3,5-dicarbonitrile), if you are interested, you can check out my other related articles.

Reference:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Related Products of 1195-58-0. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Pyridine-3,5-dicarbonitrile, is researched, Molecular C7H3N3, CAS is 1195-58-0, about Organosilicon compounds. XX. Synthesis of aromatic diamines via trimethylsilyl-protecting aniline intermediates. Author is Pratt, J. Richard; Massey, W. Dale; Pinkerton, Frank H.; Thames, Shelby F..

A synthetic approach utilizing a Me3Si protecting group was used to produce Si and diketo containing diamines. Thus, the halogen-metal interchange of N,N-bis(trimethylsilyl)bromoanilines with BuLi in ether produced Li derivatives, which were treated with dichloro silanes or dinitriles to afford the N,N-bis(trimethylsilyl)silicon containing dianilines or the corresponding lithioimines, resp. Hydrolysis removed the trimethylsilyl protecting groups and converted the lithioimines to the carbonyl compounds to afford the free diamines.

Compound(1195-58-0)Related Products of 1195-58-0 received a lot of attention, and I have introduced some compounds in other articles, similar to this compound(Pyridine-3,5-dicarbonitrile), if you are interested, you can check out my other related articles.

Reference:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Application In Synthesis of Pyridine-3,5-dicarbonitrile. 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: Pyridine-3,5-dicarbonitrile, is researched, Molecular C7H3N3, CAS is 1195-58-0, about Dihydropyridines. XVII. π-Electronic structure and reactivity of alkyl 3,5-dicyanopyridines. Author is Kuthan, Josef; Prochazkova, J..

The π-electronic structure of alkyl 3,5-dicyanopyridines was studied by the Hueckel M.O. L.C.A.O. method. The heteroatom model was used in the calculations The exptl. course of nucleophilic reactions was in agreement with the calculated superdelocalizabilities. Some of the exptl. excitation energies depended linearly on the calculated transition energies. Correlation was found between the values of proton shifts in the N.M.R. spectra of dicyanopyridines and the corresponding electron densities.

Compound(1195-58-0)Application In Synthesis of Pyridine-3,5-dicarbonitrile received a lot of attention, and I have introduced some compounds in other articles, similar to this compound(Pyridine-3,5-dicarbonitrile), if you are interested, you can check out my other related articles.

Reference:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Related Products of 1195-58-0. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Pyridine-3,5-dicarbonitrile, is researched, Molecular C7H3N3, CAS is 1195-58-0, about Electron-Deficient Heteroarenium Salts: An Organocatalytic Tool for Activation of Hydrogen Peroxide in Oxidations. Author is Sturala, Jiri; Bohacova, Sona; Chudoba, Josef; Metelkova, Radka; Cibulka, Radek.

A series of monosubstituted pyrimidinium and pyrazinium triflates and 3,5-disubstituted pyridinium triflates were prepared and tested as simple catalysts of oxidations with hydrogen peroxide, using sulfoxidation as a model reaction. Their catalytic efficiency strongly depends on the type of substituent and is remarkable for derivatives with an electron-withdrawing group, showing reactivity comparable to that of flavinium salts which are the prominent organocatalysts for oxygenations. Because of their high stability and good accessibility, 4-(trifluoromethyl)pyrimidinium and 3,5-dinitropyridinium triflates are the catalysts of choice and were shown to catalyze oxidation of aliphatic and aromatic sulfides to sulfoxides, giving quant. conversions, high preparative yields and excellent chemoselectivity. The high efficiency of electron-poor heteroarenium salts is rationalized by their ability to readily form adducts with nucleophiles, as documented by low pKR+ values (pKR+ < 5) and less neg. reduction potentials (Ered > -0.5 V). Hydrogen peroxide adducts formed in situ during catalytic oxidation act as substrate oxidizing agents. The Gibbs free energies of oxygen transfer from these heterocyclic hydroperoxides to thioanisole, obtained by calculations at the B3LYP/6-311++g(d,p) level, showed that they are much stronger oxidizing agents than alkyl hydroperoxides and in some cases are almost comparable to derivatives of flavin hydroperoxide acting as oxidizing agents in monooxygenases.

Compound(1195-58-0)Related Products of 1195-58-0 received a lot of attention, and I have introduced some compounds in other articles, similar to this compound(Pyridine-3,5-dicarbonitrile), if you are interested, you can check out my other related articles.

Reference:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

COA of Formula: C10H10ClNO. 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: 1-(4-Chlorophenyl)pyrrolidin-2-one, is researched, Molecular C10H10ClNO, CAS is 7661-33-8, about Decrease in intestinal permeability to polyethylene glycol 1000 during development in the pig. Author is Westroem, B. R.; Tagesson, C.; Leandersson, P.; Folkesson, H. G.; Svendsen, J..

Changes in intestinal permeability during postnatal development in the pig were investigated by using different-sized polyethylene glycols (PEGs) in the Mr 766-1338 range (PEG 1000) as permeability probes. Pigs of varying age, newborn (0 h), 36-45 h old, and 22-28 days old, were gavage-fed PEG 1000 together with the macromol. markers bovine serum albumin, ovalbumin, or FITC-labeled dextran 70,000. The 4-h blood serum concentrations of the different markers were determined and taken as an estimate of their intestinal transmission. In the newborn pigs, high serum levels of PEGs were obtained, concomitant with high serum levels of bovine serum albumin and FITC-dextran. After intestinal macromol. closure in the 36-45 h-old pigs, lower serum PEG levels were found, especially of those with a Mr > 1100 Da. In the 22-28 day-old pigs, PEG levels were reduced to ≤10% of those in the 36-45-h-old pigs, with the levels decreasing markedly with increasing mol. size. These results show that there is a correlation between the intestinal permeability of PEGs, especially those >1100 Da, and macromols. in the newborn pig around intestinal closure, suggesting that such PEGs traverse the gut by the macromol. route. During later development, further intestinal maturation results in a markedly reduced permeability to PEG 1000.

Compound(7661-33-8)COA of Formula: C10H10ClNO received a lot of attention, and I have introduced some compounds in other articles, similar to this compound(1-(4-Chlorophenyl)pyrrolidin-2-one), if you are interested, you can check out my other related articles.

Reference:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Pyridine-3,5-dicarbonitrile, is researched, Molecular C7H3N3, CAS is 1195-58-0, about Photochemistry of dicyanopyridines, the main research direction is photochem dicyanopyridine UV laser flash photolysis.Application of 1195-58-0.

The photochem. of a variety of dicyanopyridines (2,3-, 2,4-, 2,5-, 2,6-, 3,4- and 3,5-dicyanopyridine) in solution at room temperature was investigated. Pulsed UV (308 nm) laser irradiation in deoxygenated acetonitrile yields the triplet state with lifetimes between 4 and 10 μs and absorption bands in the 400 and 320 nm regions. In the presence of added HCl an air-insensitive transient (τ≈10-12 μs, λmax≈360-380 nm) was observed, suggesting the formation of a protonated excited state. Irradiation in the presence of amines resulted in the production of the pyridyl radical anion (τ≈40-80 μs, air sensitive, λmax≈360-380 nm) formed by electron transfer from the amine to the pyridine triplet excited state. Stern-Volmer anal. gave electron transfer rate constants in the range (1-8)×10-8 M-1s-1. In methanol solvent, irradiation yielded an air-insensitive transient assigned as the neutral pyridyl radical (τ≈30-200 μs, λmax≈370-385 nm). The formation of these transients is discussed in the context of previous photochem. ESR and product studies.

Compound(1195-58-0)Application of 1195-58-0 received a lot of attention, and I have introduced some compounds in other articles, similar to this compound(Pyridine-3,5-dicarbonitrile), if you are interested, you can check out my other related articles.

Reference:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts