Day: April 12, 2022

Product Details of 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 Reaction of 2,3-dichloro-5,6-dicyanopyrazine with enamines and some tertiary amines. Author is Hou, Dongfeng; Oshida, Atsushi; Matsuoka, Masaru.

The reaction of 2,3-dichloro-5,6-dicyanopyrazine with enamines as well as a few tertiary amines as enamine precursors was investigated. Both reactions gave aminovinyl-substituted pyrazine derivatives such as I. The products prepared are all of interest as potential pesticides.

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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

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 and characterization of non-aggregating octa-substituted azaphthalocyanines bearing bulky phenoxy substituents, published in 2008-09-08, which mentions a compound: 56413-95-7, Name is 5,6-Dichloropyrazine-2,3-dicarbonitrile, Molecular C6Cl2N4, Formula: C6Cl2N4.

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.

There are many compounds similar to this compound(56413-95-7)Formula: C6Cl2N4. if you want to know more, you can check out my other articles. I hope it will help you，maybe you’ll find some useful information.

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 Substances labeled in metabolically stable positions. 9. Synthesis of pyridine by thermal rearrangement of amines containing the C5N structure, published in 1995-02-28, which mentions a compound: 616-43-3, mainly applied to thermal rearrangement amine; pyrrole thermal rearrangement; pyridine thermal rearrangement amine, Name: 3-Methyl-1H-pyrrole.

Thermal rearrangement of N-methylbutylamine, N-methylpyrrole, 4-(N-methylamino)butanol and N-methyl-3-pyrrolidinol produces mixtures of various substances which contain pyridine as the basic structure. Only aromatic systems are stable under the reaction conditions.

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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 3-Methyl-1H-pyrrole. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 3-Methyl-1H-pyrrole, is researched, Molecular C5H7N, CAS is 616-43-3, about Alkylpyrroles in a kerogen pyrolysate: evidence for abundant tetrapyrrole pigments. Author is Sinninghe Damste, Jaap S.; Eglinton, Timothy I.; de Leeuw, Jan W..

C1-C6 alkylated pyrroles were identified as major constituents of the flash pyrolyzate of a kerogen from the Miocene Monterey Formation (California, USA) using gas chromatog. with an N-selective detector and gas chromatog.-mass spectrometry. The major alkylpyrroles identified are 2,3,4-trimethylpyrrole, 3-ethyl-4-methylpyrrole, 2,3-dimethyl-4-ethylpyrrole, 2,4-dimethyl-3-ethylpyrrole, and 3-ethyl-2,4,5-trimethylpyrrole. The alkyl substitution patterns of the alkylpyrroles strongly suggest an origin from tetrapyrrole pigments. Evidence for this hypothesis was provided by flash pyrolysis of the tetrapyrrole pigments chlorophyll-a, protoporphyrin-IX di-Me ester, and bilirubin, which yielded alkylpyrroles with a similar isomer distribution. Quant. pyrolysis using a polymer internal standard of both the kerogen and the tetrapyrrole pigments revealed that ca. 5% of the kerogen consists of macromolecularly bound tetrapyrrole pigments or that this fraction contains ca. 5% insoluble tetrapyrrole salts. These results show that in specific cases tetrapyrrole pigments can contribute significantly to the sedimentary organic matter.

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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 3-Methyl-1H-pyrrole. 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: 3-Methyl-1H-pyrrole, is researched, Molecular C5H7N, CAS is 616-43-3, about Improved preparation of 3-methylpyrrole. Laboratory note. Author is Elguero, Jose; Jacquier, Robert; Shimizu, Bernard.

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.

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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 preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 5,6-Dichloropyrazine-2,3-dicarbonitrile( cas:56413-95-7 ) is researched.Related Products of 56413-95-7.Tillo, Adam; Kryjewski, Michal; Bendzinska-Berus, Wioletta; Langer, Dominik; Rebis, Tomasz; Popenda, Lukasz; Jurga, Stefan; Mielcarek, Jadwiga; Goslinski, Tomasz; Tykarska, Ewa published the article 《Tetrapyrazinoporphyrazine with eight peripheral adamantanylsulfanyl units – Synthesis and physicochemical study》 about this compound( cas:56413-95-7 ) in Synthetic Metals. Keywords: adamantanylsulfanyl tetrapyrazinoporphyrazine preparation crystal structure physicochem. Let’s learn more about this compound (cas:56413-95-7).

A novel, (1-adamantylsulfanyl)-octasubstituted tetrapyrazinoporphyrazine has been synthesized and analyzed for its key physicochem. properties. Also, two 1-adamantylsulfanyl-substituted pyrazine derivatives were compared, and their crystallog. structures as well as chem. reactivity were assessed and discussed. Porphyrazine macrocycle showed good fluorescence and singlet oxygen generation properties as well as photostability. In addition, studied adamantylsulfanyl porphyrazine, despite its hydrophobic nature, revealed good solubility in polar solvents. Electrochem. studies revealed that the macrocycle underwent oxidation by one one-electron process and reduction with two one-electron processes.

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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.Groves, J. K.; Anderson, Hugh J.; Nagy, H. researched the compound: 3-Methyl-1H-pyrrole( cas:616-43-3 ).Product Details of 616-43-3.They published the article 《Pyrrole chemistry. XIII. New syntheses of 3-alkylpyrroles》 about this compound( cas:616-43-3 ) in Canadian Journal of Chemistry. Keywords: pyrrole alkyl preparation. We’ll tell you more about this compound (cas:616-43-3).

3-n-Alkylpyrroles are prepared in good yield by a combined Wolff-Kishner reduction and hydrolysis and decarboxylation of 4-acyl-2-pyrrole-thiolcarboxylates. Me 4-isopropyl-2-pyrrolecarboxylate and 4-tert-butyl-2-pyrrolecarbonitrile are prepared by alkylation of Me 2-pyrrolecarboxylate and 2-pyrrolecarbonitrile, resp. Hydrolysis and decarboxylation of these disubstituted compounds afford the corresponding-3-alkylpyrroles. Mass spectral data for some 1-, 2-, and 3-alkylpyrroles are reported.

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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. 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: cis-4-Aminocyclohexane carboxylic acid, is researched, Molecular C7H13NO2, CAS is 3685-23-2, about Conformationally restricted indolopiperidine derivatives as potent CCR2B receptor antagonists.

The preparation and biol. evaluation of a series of indolopiperidine CCR2B receptor antagonists possessing a conformationally restricted C-5 linker chain in combination with a restricted piperidine ring are described. Compared to the parent compound, the analog I shows a dramatic improvement in selectivity against a range of 5-HT and dopaminergic receptors.

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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

Quality Control of 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 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

Reference of 3-Methyl-1H-pyrrole. 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: 3-Methyl-1H-pyrrole, is researched, Molecular C5H7N, CAS is 616-43-3, about Management induced organic matter differentiation in grassland and arable soil: a study using pyrolysis techniques. Author is Nierop, Klaas G. J.; Pulleman, Mirjam M.; Marinissen, Joke C. Y..

Differences in agricultural management and land use lead to differences in soil structure, soil organic matter (SOM) dynamics and composition We investigated the SOM composition at 3 depth layers in a permanent pasture (PP), an organic arable (OA) and a conventional arable (CA) field within one soil series in marine loam deposits in The Netherlands. Both arable fields were in the grass phase of the rotation. The chem. composition of SOM was determined by a combination of conventional pyrolysis-gas chromatog./mass spectrometry (Py-GC/MS) and of thermally-assisted hydrolysis and methylation (THM) with tetramethylammonium hydroxide (TMAH). In PP, SOM was composed of relatively little decomposed, mainly grass-derived material comprising polysaccharides, lignin, aliphatic compounds (extractable lipids, cutin, suberin) and proteins. With depth, plant-derived constituents decreased, whereas microbial and humified material predominated. Both arable soils contained mainly strongly humified plant material and microbially altered proteineous material that showed heterocyclic N-compounds together with alkylbenzenes and phenols upon pyrolysis. With THM, small traces of plant-derived alkanols and cutin/suberin were observed in the arable soils. The upper layers of OA contained little lignin, which can only be derived from the grass vegetation or manure inputs since last plowing (2 yr before), since it was not found in the whole plow layer. Overall SOM composition is therefore hardly affected by organic farming compared to conventional management. The differences in SOM content and composition between the pasture and arable fields can be ascribed to differences in input and depth distribution of fresh organic materials. A difference in phys. protection of easily mineralizable SOM between pasture and arable soils is also likely to contribute.

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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