Day: April 8, 2022

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 Synthesis of pyrido[1′,2′:1,2]imidazo[4,5-b]pyrazines from 2-amino-3-chloro-5,6-dicyanopyrazine with substituted pyridines, published in 1986-12-31, which mentions a compound: 56413-95-7, Name is 5,6-Dichloropyrazine-2,3-dicarbonitrile, Molecular C6Cl2N4, Reference of 5,6-Dichloropyrazine-2,3-dicarbonitrile.

Novel synthesis of the title compounds by the cyclization between 2-amino-3-chloro-5,6-dicyanopyrazine (I) and various substituted pyridines is described. E.g., heating I with pyridines II (R = Me, Pr, Me3C, PhCH2, CONH2, CO2Me, Ph, 2-pyridyl) in DMF at 90° for 48 h gave 14-72% pyridoimidazopyrazines III.

Here is just a brief introduction to this compound(56413-95-7)Reference of 5,6-Dichloropyrazine-2,3-dicarbonitrile, more information about the compound(5,6-Dichloropyrazine-2,3-dicarbonitrile) is in the article, you can click the link below.

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

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 Thermal reactions of organic nitrogen compound. I. I-Methylpyrrole, published in 1958, which mentions a compound: 616-43-3, mainly applied to , Name: 3-Methyl-1H-pyrrole.

A flow method was used at 475-700°. At 475-575° the reaction was a homogeneous 1st-order isomerization, 1-methylpyrrole → 2-methylpyrrole → 3-methylpyrrole. The Arrhenius equation for this reaction, based on the disappearance of 1-methylpyrrole, is k = 2.39 × 1012e(-54,800/RT). Above 575° there was decomposition to give a complex mixture of reaction products.

Here is just a brief introduction to this compound(616-43-3)Name: 3-Methyl-1H-pyrrole, more information about the compound(3-Methyl-1H-pyrrole) is in the article, you can click the link below.

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: 3-Methyl-1H-pyrrole, is researched, Molecular C5H7N, CAS is 616-43-3, about Improved preparation of 3-methylpyrrole. Laboratory note, the main research direction is PYRROLE METHYL.Application In Synthesis of 3-Methyl-1H-pyrrole.

An improved synthesis of 3-methylpyrrole (I) and the N.M.R. spectra of the intermediates and product are given. Thus, 20 g. 3-carbethoxy-4-methyl-2-pyrrolecarboxylic acid is refluxed 1 hr. with 300 ml. 40% KOH, cooled, acidified with dilute HCl, filtered, washed with water, and dried to give 70% 4-methylpyrrole-2,3-dicarboxylic acid (II), m. 225°. II (12 g.) is added to 1 g. powd. Cu and heated under 50 mm. to dist. 87% I.

Here is just a brief introduction to this compound(616-43-3)Application In Synthesis of 3-Methyl-1H-pyrrole, more information about the compound(3-Methyl-1H-pyrrole) is in the article, you can click the link below.

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

Application In Synthesis of 3-Methyl-1H-pyrrole. 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: 3-Methyl-1H-pyrrole, is researched, Molecular C5H7N, CAS is 616-43-3, about Transformation of Nitrogen and Evolution of N-Containing Species during Algae Pyrolysis.

Transformation and evolution mechanisms of nitrogen during algae pyrolysis were investigated in depth with exploration of N-containing products under variant temperature Results indicated nitrogen in algae is mainly in the form of protein-N (∼90%) with some inorganic-N. At 400-600 °C, protein-N in algae cracked first with algae pyrolysis and formed pyridinic-N, pyrrolic-N, and quaternary-N in char. The content of protein-N decreased significantly, while that of pyrrolic-N and quaternary-N increased gradually with temperature increasing. Pyridinic-N and pyrrolic-N formation was due to deamination or dehydrogenation of amino acids; subsequently, some pyridinic-N converted to quaternary-N. Increasing temperature decreased amides content greatly while increased that of nitriles and N-heterocyclic compounds (pyridines, pyrroles, and indoles) in bio-oil. Amides were formed through NH3 reacting with fatty acids, that underwent dehydration to form nitriles. Besides, NH3 and HCN yields increased gradually. NH3 resulted from ammonia-N, labile amino acids and amides decomposition, while HCN came from nitrile decomposition At 700-800 °C, evolution trend of N-containing products was similar to that at 400-600 °C. While N-heterocyclic compounds in bio-oil mainly came from pyrifinic-N, pyrrolic-N, and quaternary-N decomposition Moreover, cracking of pyridinic-N and pyrrolic-N produced HCN and NH3. A mechanism of nitrogen transformation during algae pyrolysis is proposed based on amino acids decomposition

Here is just a brief introduction to this compound(616-43-3)Application In Synthesis of 3-Methyl-1H-pyrrole, more information about the compound(3-Methyl-1H-pyrrole) is in the article, you can click the link below.

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

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: 616-43-3, is researched, Molecular C5H7N, about The synthesis of new 3-substituted pyrroles, the main research direction is silylpyrrole; pyrrole silyl; desilylation silylpyrrole.Category: chiral-oxygen-ligands.

The synthesis of 3-alkyl-, 3-(ω-bromoalkyl)-, 3-iodo-, 3-formyl-, 3-acetyl-1-(triisopropylsilyl)pyrrole, 2-[1-(triisopropylsilyl)-3-pyrrolyl]-2-propanol, 1-(triisopropylsilyl)-3-pyrrolecarboxylic acid, and 7-[1-(triisopropylsilyl)-3-pyrrolyl]heptanoic acid as well as the desilylation of these products to the corresponding 3-substituted pyrroles is described. Intermediates in these syntheses are 1-(triisopropylsilyl)pyrrole, 3-bromo-, and 3-litho-1-(triisopropylsilyl)pyrrole.

Here is just a brief introduction to this compound(616-43-3)Category: chiral-oxygen-ligands, more information about the compound(3-Methyl-1H-pyrrole) is in the article, you can click the link below.

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 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, Article, Research Support, Non-U.S. Gov’t, Journal of Organic Chemistry called Role of Steric Hindrance in the Newman-Kwart Rearrangement and in the Synthesis and Photophysical Properties of Arylsulfanyl Tetrapyrazinoporphyrazines, Author is Novakova, Veronika; Miletin, Miroslav; Filandrova, Tereza; Lenco, Juraj; Ruzicka, Ales; Zimcik, Petr, the main research direction is zinc phthalocyanine complex preparation fluorescence; crystal structure bisarylsulfanyl pyrazinedicarbonitrile.Computed Properties of C6Cl2N4.

Conditions for the Newman-Kwart rearrangement of phenols into thiophenols were studied in relation to the bulkiness of substituents at the 2 and 6 positions of the starting phenol derivative with an emphasis on eliminating side reactions. Thiophenols with different 2,6-disubstitution patterns (including hydrogen, Me, iso-Pr or tert-Bu groups) were used for the synthesis of 5,6-bis(arylsulfanyl)pyrazine-2,3-dicarbonitriles that underwent cyclotetramerization leading to the corresponding zinc tetrapyrazinoporphyrazines (TPyzPz), aza-analogs of phthalocyanines. Several methods for the cyclotetramerization were attempted to eliminate problematic side reactions. Magnesium butoxide is the most suitable cyclotetramerization agent and afforded TPyzPzs in reasonable yields of ∼30% under mild conditions. The varying arrangements of the peripheral substitutions resulting from the different bulkiness of the substituents were demonstrated by the x-ray structures of the pyrazine-2,3-dicarbonitriles. The prepared zinc arylsulfanyl TPyzPzs showed an absorption maximum at a Q-band over 650 nm, fluorescence quantum yields between 0.078 and 0.20, and singlet oxygen quantum yields ranging 0.58-0.69. TPyzPzs with iso-Pr groups are the best derivatives in this series as they combined facile cyclotetramerization, no aggregation, and good photophys. properties, which makes them potentially suitable for photodynamic therapy.

Here is just a brief introduction to this compound(56413-95-7)Computed Properties of C6Cl2N4, more information about the compound(5,6-Dichloropyrazine-2,3-dicarbonitrile) is in the article, you can click the link below.

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

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: 56413-95-7, is researched, Molecular C6Cl2N4, about Syntheses and spectral properties of new dicyanopyrazine-related heterocycles from diaminomaleonitrile, the main research direction is dicyanopyrazine precursor fluorescent dye synthesis; quinoxaline dye preparation dicyanopyrazine precursor; furopyrazine dye preparation dicyanopyrazine precursor; pyrrolopyrazine dye preparation dicyanopyrazine precursor; pyrazinoporphyrazine dye preparation dicyanopyrazine precursor.Quality Control of 5,6-Dichloropyrazine-2,3-dicarbonitrile.

New dicyanopyrazine-related heterocycles such as quinoxalines, furopyrazines, pyrrolopyrazines, and pyrazinoporphyrazines were synthesized and their absorption and fluorescence spectra were correlated with their structures.

Here is just a brief introduction to this compound(56413-95-7)Quality Control of 5,6-Dichloropyrazine-2,3-dicarbonitrile, more information about the compound(5,6-Dichloropyrazine-2,3-dicarbonitrile) is in the article, you can click the link below.

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 natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 616-43-3, is researched, SMILESS is CC1=CNC=C1, Molecular C5H7NJournal, Article, Research Support, Non-U.S. Gov’t, Organic Letters called Direct Synthesis of Bipyrroles Using Phenyliodine Bis(trifluoroacetate) with Bromotrimethylsilane, Author is Dohi, Toshifumi; Morimoto, Koji; Maruyama, Akinobu; Kita, Yasuyuki, the main research direction is bipyrrole regioselective preparation; biindole regioselective preparation; regioselective oxidative dimerization pyrrole indole phenyliodonium trifluoroacetate bromotrimethylsilane.Formula: C5H7N.

Bipyrroles and a biindole are prepared regioselectively by oxidative dimerization of pyrroles or indoles with phenyliodine bis(trifluoroacetate) (PIFA) in the presence of bromotrimethylsilane. 3,4-Disubstituted pyrroles and 4,5,6,7-tetrahydroisoindole undergo dimerization to give 2,2′-bipyrroles (or 4,4′,5,5′,6,6′,7,7′-octahydro-1,1′-biisoindole) in 60-78% yields (with respect to PIFA). 3-Substituted-1H-pyrroles undergo regioselective oxidative dimerization with PIFA and bromotrimethylsilane to give 3,4′-disubstituted-2,2′-bipyrroles as the major products in 52-82% yields along with varying amounts of the 3,3′-disubstituted-2,2′-bipyrroles. 3-Methylindole undergoes oxidative dimerization to give 3,3′-dimethyl-2,2′-biindole in 74% yield in addition to 29% of 2-(3-methyl-1-indolyl)-3-methylindoline. While pyrrole undergoes oxidative dimerization with PIFA and bromotrimethylsilane to give only 2,2′-bipyrrole in 78% yield, 1-phenylpyrrole reacts under similar conditions to give 1,1′-diphenyl-2,3′-bipyrrole in 56% yield.

Here is just a brief introduction to this compound(616-43-3)Formula: C5H7N, more information about the compound(3-Methyl-1H-pyrrole) is in the article, you can click the link below.

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

Application In Synthesis of cis-4-Aminocyclohexane carboxylic acid. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: cis-4-Aminocyclohexane carboxylic acid, is researched, Molecular C7H13NO2, CAS is 3685-23-2, about Identification and Biological Evaluation of a Series of 1H-Benzo[de]isoquinoline-1,3(2H)-diones as Hepatitis C Virus NS5B Polymerase Inhibitors. Author is Ontoria, Jesus M.; Rydberg, Edwin H.; Di Marco, Stefania; Tomei, Licia; Attenni, Barbara; Malancona, Savina; Martin Hernando, Jose I.; Gennari, Nadia; Koch, Uwe; Narjes, Frank; Rowley, Michael; Summa, Vincenzo; Carroll, Steve S.; Olsen, David B.; De Francesco, Raffaele; Altamura, Sergio; Migliaccio, Giovanni; Carfi, Andrea.

The hepatitis C virus (HCV) NS5B RNA-dependent RNA polymerase (RdRp) plays a central role in virus replication. NS5B has no functional equivalent in mammalian cells and, as a consequence, is an attractive target for inhibition. Herein, we present 1H-benzo[de]isoquinoline-1,3(2H)-diones as a new series of selective inhibitors of HCV NS5B polymerase. The HTS hit 1 shows submicromolar potency in two different HCV replicons (1b and 2b) and displays no activity on other polymerases (HIV-RT, Polio-pol, GBV-b-pol). These inhibitors act during the pre-elongation phase by binding to NS5B non-nucleoside binding site Thumb Site II as demonstrated by crystal structure of compound 1 with the ΔC55-1b and ΔC21-2b enzymes and by mutagenesis studies. SAR in this new series reveals inhibitors, such as 20, with low micromolar activity in the HCV replicon and with good activity/toxicity window in cells.

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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

Dubinina, G. G.; Platonov, M. O.; Golovach, S. M.; Borysko, P. O.; Tolmachov, A. O.; Volovenko, Y. M. published the article 《Novel 5,7-disubstituted 6-amino-5H-pyrrolo[3,2-b]pyrazine-2,3-dicarbonitriles, the promising protein kinase inhibitors with antiproliferative activity》. Keywords: pyrrolopyrazinedicarbonitrile substituted preparation inhibitor protein kinase mol modeling; anticancer pyrrolopyrazinedicarbonitrile preparation antiproliferative human cancer cell line.They researched the compound: 5,6-Dichloropyrazine-2,3-dicarbonitrile( cas:56413-95-7 ).SDS of cas: 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.

New derivatives of pyrrolo[2,3-b]pyrazine were synthesized and tested on a panel of cultured human tumor cell lines. It was found that 6-amino-5-(3-chlorophenylamino)-7-(1-methyl-1H-benzo[d]imidazol-2-yl)-5H-pyrrolo[3,2-b]pyrazine-2,3-dicarbonitrile (I) exhibited a significant antiproliferative activity: GI50 for cell lines RXF 393 (renal cancer) and BT-549 (breast cancer) were 14 and 82 nM, resp. To identify possible mol. targets, docking of the most active compounds into the active sites of cyclin-dependent kinases was performed. Mol. modeling of the inhibitor-enzyme complexes showed the differences in the binding poses of new pyrrolo[2,3-b]pyrazine derivatives in the kinase ATP-binding site compared with known pyrrolo[2,3-b]pyrazine inhibitors called aloisines. The patterns of drug kinase interactions correlated well with antiproliferative activities of novel derivatives Key interactions and binding mode of docked compounds are discussed.

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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