Category: 56413-95-7

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called 5,6-Dicyano-2,3-dithiopyrazine (dcdmp) chemistry: synthesis and crystal structure of Au(III)(dcdmp)2 complexes and 2,3,7,8-tetracyano-1,4,6,9-tetraazathianthrene, published in 2004-05-06, which mentions a compound: 56413-95-7, Name is 5,6-Dichloropyrazine-2,3-dicarbonitrile, Molecular C6Cl2N4, Application In Synthesis of 5,6-Dichloropyrazine-2,3-dicarbonitrile.

As an effort to explore new complexes of the 2,3-dicyano-5,6-dimercaptopyrazine (dcdmp) ligand with different transition metals, different salts containing both the Au(dcdmp)2 – complex and the new species 2,3,7,8-tetracyano-1,4,6,9-tetraazathianthrene (tctata), were obtained and characterized. Bu4N[Au(dcdmp)2] crystallizes in monoclinic space group C2/c, Z = 8 with a 35.147(4), b 9.527(1), c 21.792(2) Å and β 109.626(8)°. Its crystal structure consist of almost regular columns of [Au(dcdmp)2]-, stacked along b, surrounded by Bu4N+ cations. Bu4N[AuBr2(tctata)] crystallizes in triclinic space group P1̅, Z = 2, with a 10.986(1), b 13.230(2), c 13.791(1) Å, α 79.150(9), β 69.663(6), γ 70.254(9)°. The crystal packing is made by zigzag chains of tctata separated by layers of cations, with AuBr2 anions located in alternated cavities between the tctata chains and the cation layers. At last, Bu4N[Au(dcdmp)2].(tctata) crystallizes in monoclinic space group P21/n, Z = 4, with a 10.693(2), b 40.308(7), c 10.870(1) Å, β 92.16(1)°. Its crystal structure can be seen has a mix of those of the two preceding compounds It consists of bidimensional layers composed of out of registry parallel zigzag chains of alternating tctata and [Au(dcdmp)2]- units. The adjacent layers are separated by layers of [Bu4N]+. In the last two compounds the tctata appears as a planar mol.

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Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

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: 5,6-Dichloropyrazine-2,3-dicarbonitrile, is researched, Molecular C6Cl2N4, CAS is 56413-95-7, about Phthalocyanines and Tetrapyrazinoporphyrazines with Two Cationic Donuts: High Photodynamic Activity as a Result of Rigid Spatial Arrangement of Peripheral Substituents.Computed Properties of C6Cl2N4.

High photodynamic activity was observed for hexadeca-cationic zinc, magnesium, and metal-free phthalocyanines (Pcs) and tetrapyrazinoporphyrazines with EC50 values as low as 5 nM (MCF-7 cells) for the best compound; this activity was several times better than that of clin. established photosensitizers verteporfin, temoporfin, S3AlOHPc, or protoporphyrin IX. This lead compound was characterized by low dark toxicity (TC50 = 369 μM), high efficiency against other cell lines (HCT 116 and HeLa), and possible activation by light above 680 nm. The excellent photodynamic activity resulted from the rigid spatial arrangement of the quaternized triazole moieties above and below the Pc core, as confirmed by X-ray crystallog. The triazole moieties thus formed two “”cationic donuts”” that protected the hydrophobic core against aggregation in water. The lysosomes were found to be the site of subcellular localization and were consequently the primary targets of photodynamic injury, resulting in predominantly necrotic cell death.

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Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

Electric Literature of C6Cl2N4. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 5,6-Dichloropyrazine-2,3-dicarbonitrile, is researched, Molecular C6Cl2N4, CAS is 56413-95-7, about Preparation, Characterization, and FET Properties of Novel Dicyanopyrazinoquinoxaline Derivatives. Author is Nishida, Junichi; Naraso; Murai, Shio; Fujiwara, Eiichi; Tada, Hirokazu; Tomura, Masaaki; Yamashita, Yoshiro.

A series of the title dicyanopyrazinoquinoxaline derivatives have been prepared and characterized by using single-crystal X-ray structure anal. and redox potential measurements. They have strong electron-accepting properties due to the pyrazinopyrazine skeletons as well as the cyano groups. Substituents can be easily introduced at the benzene ring and control the HOMO-LUMO energy gap and the mol. packing. They show clear n-type transistor properties in the FET devices.

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Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

SDS of cas: 56413-95-7. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 5,6-Dichloropyrazine-2,3-dicarbonitrile, is researched, Molecular C6Cl2N4, CAS is 56413-95-7, about Studies on herbicidal 2,3-dicyanopyrazines. Part II. Structure-activity relationships of herbicidal 5-ethylamino- and 5-propylamino-2,3-dicyanopyrazines. Author is Nakamura, Akira; Ataka, Toshiei; Segawa, Hirozo; Takeuchi, Yasutomo; Takematsu, Tetsuo.

Sixty-eight 6-substituted 5-ethylamino- and 5-propylamino-2,3-dicyanopyrazines were synthesized and their herbicidal activities against barnyard grass (Echinochloa crus-galii) were measured in pot tests. The most active compound was 2,3-dicyano-5-propylamino-6-(m-chlorophenyl)pyrazine  [72113-45-2]. The activities of the 2 series of compounds were analyzed quant. using the hydrophobic and steric parameters of substituents at the 6-position of the pyrazine ring and an indicator variable.

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Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

Name: 5,6-Dichloropyrazine-2,3-dicarbonitrile. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 5,6-Dichloropyrazine-2,3-dicarbonitrile, is researched, Molecular C6Cl2N4, CAS is 56413-95-7, about Synthesis and characterization of non-aggregating octa-substituted azaphthalocyanines bearing bulky phenoxy substituents. Author is Makhseed, Saad; Samuel, Jacob; Ibrahim, Fadi.

The synthesis and characterization of two novel series of octaazaphthalocyanines (AzaPc) bearing bulky phenoxy substituents are described. Target precursors to AzaPcs derivatives were prepared by using a nucleophilic aromatic substitution reaction between sterically hindered phenols (2,6-di-iso-propylphenol and 2,6-diphenylphenol) and 5,6-dichloropyrazine-2,3-dicarbonitrile. UV-vis and 1H NMR analyses confirm that steric isolation of the AzaPcs cores enforced both in the solution and in the solid state. This study explores the effectiveness of the steric factor imposed by the applied bulky phenoxy substituents on the packing behavior of azaphthalocyanines and thereby improving their solubility and photo-phys. properties.

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Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

Hlouskova, Zuzana; Tydlitat, Jiri; Kong, Manman; Pytela, Oldrich; Mikysek, Tomas; Klikar, Milan; Almonasy, Numan; Dvorak, Miroslav; Jiang, Zhiyong; Ruzicka, Ales; Bures, Filip published an article about the compound: 5,6-Dichloropyrazine-2,3-dicarbonitrile( cas:56413-95-7,SMILESS:N#CC1=NC(Cl)=C(Cl)N=C1C#N ).Reference of 5,6-Dichloropyrazine-2,3-dicarbonitrile. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:56413-95-7) through the article.

A series of dicyanopyrazine and dicyanoimidazole derived push-pull mols. have been prepared and further investigated as photoredox catalysts. The fundamental properties of the catalysts were studied by DSC, X-ray anal., absorption/emission spectra, and electrochem. and were completed with the DFT results. The catalytic activity has been evaluated in visible light induced α-functionalization of amines (cross-dehydrogenative coupling and annulation reaction of tetrahydroisoquinolines). Thorough structure-property-catalytic activity relationships were elucidated. The developed series of tailored organic photoredox catalysts allows synthetic chemists to perform desired reactions under sustainable and mild conditions employing solely visible light as a source of energy.

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Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

Name: 5,6-Dichloropyrazine-2,3-dicarbonitrile. 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: 5,6-Dichloropyrazine-2,3-dicarbonitrile, is researched, Molecular C6Cl2N4, CAS is 56413-95-7, about Syntheses of Octa(dialkylamino)azaphthalocyanines. Author is Morkved, Eva H.; Kjosen, Helge; Ossletten, Hege; Erchak, Nikolai.

Ni(II) octa(4-morpholinyl)- (11a) and Cu(II) octa(1-pyrrolidinyl)- (11b) azaphthalocyanines were prepared from the corresponding pyrazine diiminoimides (10). The precursor pyrazine dicarbonitriles (2) gave 6-cyanopyrazine-5-alkyl carboximidates (3-9) as stable intermediates when reacted with NH3 and catalytic amounts of Na alkoxide in alcs. 3-9 Were converted to the diiminoimides 10 upon reflux in PrOH or BuOH for several hours. This unusual reaction pattern was observed for pyrazine-2,3-dicarbonitriles (2) with morpholine, thiomorpholine, piperidine or pyrrolidine substituted in the 5- and 6-positions.

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Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

Ried, Walter; Tsiotis, Georgios published the article 《New fused nitrogen-rich heterocycles from 5,6-dichloropyrazine-2,3-dicarbonitrile》. Keywords: pyrazinopyrazine; pyridazinopyrazine; quinoxalinopyrazine; pyrazinopyrazinopyridazine; quinoxalinopyrazinopyridazine; cyclization hydrazine pyrazinedicarbonitrile.They researched the compound: 5,6-Dichloropyrazine-2,3-dicarbonitrile( cas:56413-95-7 ).Related Products of 56413-95-7. 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:56413-95-7) here.

The reaction of the title compound with amines gave 34-82% pyrazines I (R = morpholino, piperidino, 1-pyrrolidinyl, Et2N, Me2N; RR = R1N(CH2)nNR1, R1 = Et, Ph, PhCH2, n = 2, R1 = Et, n = 3) and II (R2 = R3 = H, Me; R2 = H, R3 = Me, Cl; R2 = Me, R3 = Cl), which, upon treatment with N2H4, gave 25-61% III-V.

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Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 5,6-Dichloropyrazine-2,3-dicarbonitrile, is researched, Molecular C6Cl2N4, CAS is 56413-95-7, about The synthesis, photochemical and photophysical properties of zinc aryloxy- and alkyloxyazaphthalocyanines, the main research direction is zinc azaphthalocyanine alkoxy aryloxy preparation fluorescence singlet oxygen yield.Safety of 5,6-Dichloropyrazine-2,3-dicarbonitrile.

Octasubstituted zinc tetrapyrazinoporphyrazines bearing butoxy, octyloxy, 2,6-diisopropylphenoxy and 4-(hydroxymethyl)phenoxy substituents were synthesized from the corresponding 5,6-disubstituted pyrazine-2,3-dicarbonitriles using Zn(quinoline)2Cl2 in yields varying from 14 to 44%. The reaction procedure proved to be efficient for the synthesis of both alkyloxy- and aryloxy- substituted zinc tetrapyrazinoporphyrazines and did not require strictly anhydrous conditions. Optimal cyclotetramerization conditions were identified for each derivative, in terms of reaction temperature, as overheating cleaved the ether bond leaving a vacant OH group on the macrocycle. The photochem. and photophys. properties of the synthesized compounds were investigated in pyridine. Singlet oxygen quantum yields (Φ Δ) ranged from 0.49 to 0.61 and high fluorescence quantum yields (Φ F) of ∼0.30 were observed for non-aggregated compounds

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Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

Recommanded Product: 5,6-Dichloropyrazine-2,3-dicarbonitrile. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 5,6-Dichloropyrazine-2,3-dicarbonitrile, is researched, Molecular C6Cl2N4, CAS is 56413-95-7, about Effective Monofunctional Azaphthalocyanine Photosensitizers for Photodynamic Therapy. Author is Zimcik, Petr; Miletin, Miroslav; Novakova, Veronika; Kopecky, Kamil; Nejedla, Marcela; Stara, Vendula; Sedlackova, Katerina.

In this work we present a rational design of the active part of third generation photosensitizers for photodynamic therapy based on phthalocyanine and an azaphthalocyanine core. The preferred zinc complexes of the AAAB type that contain bulky tert-butylsulfanyl substituents (A) and one carboxy group (B) have been synthesized by statistical condensation and fully characterized. The tetramerization was performed using magnesium(ii) butoxide followed by demetalation and insertion of ZnII. Compound 1 synthesized from 4,5-bis(tert-butylsulfanyl)phthalonitrile (A) and 2,3-dicyanoquinoxaline-6-carboxylic acid (B) exerted very promising photophys. properties (Q-band absorption at 726 nm, ε = 140000 M-1 cm-1), which allowed strong absorption of light at long wavelengths where the penetration of the light through human tissues is deeper. The very high singlet oxygen quantum yield of 1 (ΦΔ = 0.80) assures efficient photosensitization. As a result of bulky peripheral substituents, compound 1 shows good solubility in organic solvents with a low degree of aggregation, which makes it potentially viable for noncomplicated modification. One carboxy group in the final structure of 1 allows simple binding to possible carriers. This compound is suitable for binding to targeting moieties to form the highly active part of a third-generation photosensitizer.

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Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate