Category: 56413-95-7

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: 56413-95-7, is researched, SMILESS is N#CC1=NC(Cl)=C(Cl)N=C1C#N, Molecular C6Cl2N4Journal, Journal of Heterocyclic Chemistry called Synthesis of pyrido[1′,2′:1,2]imidazo[4,5-b]pyrazines from 2,3-dichloro-5,6-dicyanopyrazine with 2-aminopyridines, Author is Suzuki, Toshinobu; Nagae, Yasushi; Mitsuhashi, Keiryo, the main research direction is chlorodicyanopyrazine cyclocondensation aminopyridine; pyridoimidazopyrazine.Recommanded Product: 5,6-Dichloropyrazine-2,3-dicarbonitrile.

Novel synthesis of the title compounds I (R = H, 6-, 7-, 8-, 9-Me, 8-Cl, 8-Br, 6-PhCH2O) by the facile cyclization between 2,3-dichloro-5,6-dicyanopyrazine and various 2-aminopyridines II under relatively mild conditions is described. The reactivity depended on the basicity of 2-aminopyridines.

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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

Category: chiral-oxygen-ligands. 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 Antioxidant-substituted tetrapyrazinoporphyrazine as a fluorescent sensor for basic anions. Author is Hill, Jonathan P.; Subbaiyan, Navaneetha K.; D’Souza, Francis; Xie, Yongshu; Sahu, Satyajit; Sanchez-Ballester, Noelia M.; Richards, Gary J.; Mori, Toshiyuki; Ariga, Katsuhiko.

Tetrapyrazinoporphyrazine substituted at its periphery with eight antioxidant 3,5-di-t-butyl-4-hydroxyphenyl groups behaves as a turn-on fluorescent sensor for fluoride anions. Conversely, the precursor antioxidant-substituted 1,2-phthalonitrile was found to act in turn-off mode suggesting that the origin of the phenomenon lies at the phenolate-substituted 1,4-pyrazinyl moiety.

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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 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.Quality Control 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

Computed Properties 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 Structure-Property Relationships and Nonlinear Optical Effects in Donor-Substituted Dicyanopyrazine-Derived Push-Pull Chromophores with Enlarged and Varied π-Linkers. Author is Bures, Filip; Cermakova, Hana; Kulhanek, Jiri; Ludwig, Miroslav; Kuznik, Wojciech; Kityk, Iwan V.; Mikysek, Tomas; Ruzicka, Ales.

Thirteen new, stable, push-pull systems featuring dimethylamino and pyrazine-2,3-dicarbonitrile moieties as the donor and acceptor, resp., and systematically extended and varied π-linkers were prepared and studied. Evaluation of the measured UV/Vis spectra, electrochem. data (cyclic voltammetry, rotating disk voltammetry, and polarog.), x-ray data, and exptl. determined and calculated hyperpolarizability values enabled structure-property studies; these revealed some important structural features that affected the efficiency of intramol. charge-transfer and nonlinear optical properties in this class of heterocyclic push-pull chromophores. The charge-transfer transition was most significantly affected by structural features such as π-linker length, chromophore planarity, and the number of 1,4-phenylene/ethynylene subunits in the π-linker.

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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

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Article, Dalton Transactions called One-dimensional single-helix coordination polymer self-assembled by a crown-ether appended-N-heteroacene radical anion, Author is Isoda, Kyosuke; Takahashi, Hinako; Mutoh, Yuichiro; Hoshino, Norihisa; Akutagawa, Tomoyuki, which mentions a compound: 56413-95-7, SMILESS is N#CC1=NC(Cl)=C(Cl)N=C1C#N, Molecular C6Cl2N4, Formula: C6Cl2N4.

A crown-ether appended N-heteroacene 1 was reduced in the presence of NaBPh4 to the radical anion 2 by accepting one electron transferred from both the cathode and BPh4- as a reductant. The obtained radical anion 2 can function as a radical anion ligand to bridge two sodium ions to self-assemble into one-dimensional helical coordination polymers.

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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

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.Hamdoush, Mahmoud; Ivanova, Svetlana S.; Koifman, Oskar I.; Kos’kina, Marina; Pakhomov, Georgy L.; Stuzhin, Pavel A. researched the compound: 5,6-Dichloropyrazine-2,3-dicarbonitrile( cas:56413-95-7 ).Related Products of 56413-95-7.They published the article 《Synthesis, spectral and electrochemical study of perchlorinated tetrapyrazinoporphyrazine and its AlIII, GaIII and InIII complexes》 about this compound( cas:56413-95-7 ) in Inorganica Chimica Acta. Keywords: preparation aluminum gallium indium perchlorinated tetrapyrazinoporphyrazine complex; cyclic voltammetry aluminum gallium indium perchlorinated tetrapyrazinoporphyrazine complex. We’ll tell you more about this compound (cas:56413-95-7).

Complexes of octachloro substituted tetrapyrazinoporphyrazine with AlIII, GaIII and InIII (2a-c, (I: 2, 4, and 5)) were synthesized by direct melting of 5,6-dichloro-2,3-dicarbonitrile (1) with corresponding metal salt (AlIII chloride, GaIII and InIII hydroxydiacetates). Metal free macrocycle (II: 3) was prepared by catalytic demetalation of the InIII complex 2c (5) in the presence of chloride ions. Introduction of eight chlorine atoms to the peripheral positions of the TPyzPA macrocycle leads to a bathochromic shift of the Q band by 10-15 nm indicating narrowing of the HOMO-LUMO gap by 210-260 cm-1. The presence of eight electroneg. chlorine atoms facilitates the reduction of the TPyzPA macrocycle leading to the considerable pos. shift of the 1st reduction potentials for the metal complexes 2a-c (2, 4, and 5)(E1/2 approx. -0.16 V vs. Ag/AgCl in DMSO) and for the metal free macrocycle 3 (E1/2 = -0.04 V vs. Ag/AgCl in DMSO).

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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

Safety of 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 2-Sulfanylidene-1,3-dithiolo[4,5-b]pyrazine-5,6-dicarbonitrile. Author is Tomura, Masaaki.

In the title compound, C7N4S3, the mol. entity consisting of a 1,3-dithiole-2-thione with a fused pyrazine ring is planar, with an r.m.s. deviation of 0.042 (3) Å from the least-squares plane. In the crystal, mols. are linked via short intermol. S···N contacts [3.251 (4) and 3.308 (3) Å] between the S atom of the thiocarbonyl group and N atoms of the cyano groups.

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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

COA of Formula: C6Cl2N4. 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: 5,6-Dichloropyrazine-2,3-dicarbonitrile, is researched, Molecular C6Cl2N4, CAS is 56413-95-7, about Structure-Property Relationships and Nonlinear Optical Effects in Donor-Substituted Dicyanopyrazine-Derived Push-Pull Chromophores with Enlarged and Varied π-Linkers. Author is Bures, Filip; Cermakova, Hana; Kulhanek, Jiri; Ludwig, Miroslav; Kuznik, Wojciech; Kityk, Iwan V.; Mikysek, Tomas; Ruzicka, Ales.

Thirteen new, stable, push-pull systems featuring dimethylamino and pyrazine-2,3-dicarbonitrile moieties as the donor and acceptor, resp., and systematically extended and varied π-linkers were prepared and studied. Evaluation of the measured UV/Vis spectra, electrochem. data (cyclic voltammetry, rotating disk voltammetry, and polarog.), x-ray data, and exptl. determined and calculated hyperpolarizability values enabled structure-property studies; these revealed some important structural features that affected the efficiency of intramol. charge-transfer and nonlinear optical properties in this class of heterocyclic push-pull chromophores. The charge-transfer transition was most significantly affected by structural features such as π-linker length, chromophore planarity, and the number of 1,4-phenylene/ethynylene subunits in the π-linker.

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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

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Synthesis called Syntheses and characterization of push-pull tetrapyrazino[2,3-b]indoloporphyrazines, Author is Jaung, Jae-Yun; Matsuoka, Masaru; Fukunishi, Koushi, which mentions a compound: 56413-95-7, SMILESS is N#CC1=NC(Cl)=C(Cl)N=C1C#N, Molecular C6Cl2N4, HPLC of Formula: 56413-95-7.

The synthesis of tetrakis(indolopyrazino)porphyrazines by ring-closure reactions of 2,3-dichloro-5,6-dicyanopyrazine with enamines is described. Alkylated tetrakis(indolopyrazino)porphyrazines have push-pull intramol. charge-transfer chromophoric systems and show good solubility in most organic solvents. Large spectral changes caused by mol. aggregation of these dyes affected by solvent polarity and temperature were studied.

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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

Donald, D. S.; Cheng, L. T.; Desiraju, G.; Meredith, G. R.; Zumsteg, F. C. published the article 《New second-order nonlinear optical organic crystals》. Keywords: nonlinear optical organic crystal; benzonitride derivative nonlinear optical; pyrazine derivative nonlinear optical.They researched the compound: 5,6-Dichloropyrazine-2,3-dicarbonitrile( cas:56413-95-7 ).Formula: C6Cl2N4. 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 design of mol. crystals with specific optical properties, which are thought to arise from constituent mols.’ polarizability properties, is a desirable but currently unachievable goal. One can partially achieve this goal by choosing compounds with specific mol. attributes and empirically determining the manner in which these are translated into crystal properties. Besides the fact that there are no certain rules for prediction of crystal packing arrangements, where is also a problem in specifying mol. properties from what are today incomplete polarizability structure-property relationships. We have, realizing these limitations, identified polarizability structure-property relationships. We have, realizing these limitations, identified new mol. crystals by a nonlinear optical (powder-SHG) scouting-screening program from lists of compounds chosen because of desirable mol. properties. Examination of successful materials has revealed interesting, new alignment motifs. Some of these materials, a set of halogen and cyano derivatives of aromatic compounds, are described relating properties and structures of mols. and crystals. In particular, the orientation directing influence of intermol. halogen-cyano interactions and the use of heterocyclic compounds to improve transparency in the near IR and in the blue and near UV spectral regions are demonstrated.

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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