Tag: M.W=100-200

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 Bulky 2,6-diphenylphenylsulfanyl substituents efficiently inhibit aggregation in phthalocyanines and tetrapyrazinoporphyrazines and control their photophysical and electrochemical properties, published in 2017-01-31, which mentions a compound: 56413-95-7, mainly applied to magnesium zinc sulfanyl phthalocyanine tetrapyrazinoporphyrazine complex preparation redox potential; fluorescence magnesium zinc sulfanyl phthalocyanine tetrapyrazinoporphyrazine complex, COA of Formula: C6Cl2N4.

Octasubstituted zinc, metal-free and magnesium complexes of phthalocyanine and tetrapyrazinoporphyrazine bearing very bulky 2,6-diphenylphenylsulfanyl substituents were synthesized. The substituents efficiently inhibited aggregation of the dyes and only monomers were detected even at a concentration of 200 μM solution in toluene. Photophys. data indicated influence of the heavy-atom effect – magnesium complexes were more fluorescent (ΦF 0.40-0.51) and zinc complexes produced stronger the singlet oxygen (ΦΔ 0.56-0.72) in both series of compounds The presence of addnl. nitrogens in tetrapyrazinoporphyrazine core made it substantially more electron deficient when compared with corresponding phthalocyanine analogs. 2,6-Diphenylphenylsulfanyl substituents also increased electron deficient character of the core and influenced the photophys. 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

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 Dually directional glycosylated phthalocyanines as extracellular red-emitting fluorescent probes, the main research direction is glycosylated phthalocyanine extracellular red emitting fluorescent probe.Formula: C6Cl2N4.

The development of new non-aggregated phthalocyanines bearing multivalent saccharide moieties on their macrocyclic rims is of great interest. Many characteristics, including water-solubility, non-toxicity and others, can be feasibly obtained by these amphiphiles which can be considered as a key solution for demonstrating highly efficient photoactive materials in water. Herein, a family of five newly prepared dually directional Zn(II) containing phthalocyanines (PcG1-4) and azaphthalocyanine (AzaPcG1) glycoconjugates is described. The unique spatial arrangement of the glucoside units based on peripherally hexadeca-(PcG1) and nonperipherally octa-(PcG4) macrocycles provides a fully monomeric behavior along with a high fluorescence (ΦF ~0.21) in aqueous solution These amphiphiles were characterized by low toxicity, and an extremely low cellular uptake was obtained due to the highly polar nature of the glucoside substituents. Accordingly, their potential as suitable photoactive chromophores for red-emitting extracellular fluorescent probes has been confirmed upon the evaluation of paracellular transport using a layer of MDCKII cells with the permeability coefficient fully comparable with an established evaluator of the integrity of the monolayer.

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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: cis-4-Aminocyclohexane carboxylic acid( cas:3685-23-2 ) is researched.Application of 3685-23-2.Karpavicius, K.; Patockiene, L.; Knunyants, I. L. published the article 《Synthesis of derivatives of stereoisomeric aminocyclohexanecarboxylic acids containing an acyl residue of p-[bis(2-chloroethyl)amino]phenylacetic acid》 about this compound( cas:3685-23-2 ) in Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya. Keywords: chloroethylamino phenylacetamide carboxycyclohexyl; aminophenyl acetamide chloroethyl carboxycyclohexyl; cyclohexyl bischloroethylaminophenylacetamide. Let’s learn more about this compound (cas:3685-23-2).

Cyclohexylamines I (R = cis- and trans-4-CO2H and -CH2CO2H, H, cis-3-CO2H) reacted with 4-(ClCH2CH2)2NC6H4CH2COCl to give amides II in 55-72% yield. I (R = trans-4-CO2Et) reacted with 4-(ClCH2CH2)2NC6H4CH2CO2H in presence of dicyclohexylcarbodiimide or ClCO2Bu to give resp. II.

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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

Formula: C6Cl2N4. 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: 5,6-Dichloropyrazine-2,3-dicarbonitrile, is researched, Molecular C6Cl2N4, CAS is 56413-95-7, about Heavy metal effects on physicochemical properties of non-aggregated azaphthalocyanine derivatives.

Two series of peripherally substituted azaphthalocyanines (AzaPcs) containing different transition metals (Al(III), Zn(II), Ga(III), In(III) and Fe(II)) were synthesized and studied for their photophys. properties. As confirmed by UV-visible and 1H NMR analyses, the non-aggregation behavior was effectively induced by the applied bulky peripheral substituents which had no effect on the photophys. properties. Tuning the Q-band position was clearly achievable by using different central heavy metals which have considerable effects on the fluorescence quantum yield and singlet oxygen generation efficiency. This comparative study showed an interesting linear relation between the former and at. number of the central metal. The indium containing complexes exhibited the best result due to the heavy metal effect and therefore could be promoted as a potential photosensitizer in photodynamic therapy (PDT) application.

Here is just a brief introduction to this compound(56413-95-7)Formula: 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

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 5,6-Dichloropyrazine-2,3-dicarbonitrile(SMILESS: N#CC1=NC(Cl)=C(Cl)N=C1C#N,cas:56413-95-7) is researched.Formula: C6Cl2N4. The article 《Synthesis and solution studies on azaphthalocyanines with quaternary aminoethyl substituents》 in relation to this compound, is published in Coloration Technology. Let’s take a look at the latest research on this compound (cas:56413-95-7).

A pyrazinedinitrile derivative carrying dimethylaminoethylsulfanyl groups at positions 5 and 6 was synthesized from 2-dimethylaminoethanethiol hydrochloride and 2,3-dicarbonitrile-5,6-dichloropyrazine. The dicarbonitrile gave magnesium azaphthalocyanine (MgAzaPc) when reacted with magnesium propoxide in propanol. The conversion of the MgAzaPc to a metal-free derivative was achieved by treatment with trifluoroacetic acid. Incorporation of transition metal ions into the inner core of azaphthalocyanine was accomplished by treatment of the metal-free derivative with metal acetates, i.e. Zn(OAc)2, Co(OAc)2. These azaphthalocyanines were converted into water-soluble quaternised products by reaction with Me iodide. Aggregation phenomena were followed for magnesium azaphthalocyanine with quaternisable dimethylamino substituents within a specific range of pH. The compounds were characterized by FTIR, 1H NMR, mass and UV-visible spectral data.

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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 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, Tetrahedron Letters called Highly efficient synthesis of 5,6-disubstituted-5H-pyrrolo[2,3-b]pyrazine-2,3-dicarbonitriles through a one-pot palladium-catalyzed coupling reaction/cyclization in water, Author is Keivanloo, Ali; Bakherad, Mohammad; Nasr-Isfahani, Hossein; Esmaily, Somayeh, the main research direction is amino chloropyrazine dicarbonitrile preparation phenylacetylene palladium copper SDS heterocyclization; pyrrolopyrazine dicarbonitrile preparation; heterocyclization catalyst palladium copper SDS.HPLC of Formula: 56413-95-7.

A highly efficient one-pot synthesis of 5,6-disubstituted-5H-pyrrolo[2,3-b]pyrazine-2,3-dicarbonitriles is presented. The reaction of 5-(alkyl/arylamino)-6-chloropyrazine-2,3-dicarbonitriles with phenylacetylene, catalyzed by Pd-Cu, in the presence of SDS as the surfactant in water, leads to the desired products in good-to-high yields.

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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 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, Chemistry – A European Journal called Metal-Cation Recognition in Water by a Tetrapyrazinoporphyrazine-Based Tweezer Receptor, Author is Lochman, Lukas; Svec, Jan; Roh, Jaroslav; Kirakci, Kaplan; Lang, Kamil; Zimcik, Petr; Novakova, Veronika, the main research direction is metal cation recognition water tetrapyrazinoporphyrazine tweezer receptor; cations; crown compounds; fluorescent probes; phthalocyanines; sensors.Recommanded Product: 56413-95-7.

A series of zinc azaphthalocyanines with two azacrowns in a rigid tweezer arrangement were prepared and the fluorescence sensing properties were studied. The size-driven recognition of alkali and alk. earth metal cations was significantly enhanced by the close cooperation of the two azacrown units, in which both donor nitrogen atoms need to be involved in analyte binding to switch the sensor on. The mono- or biphasic character of the binding isotherms, together with the binding stoichiometry and magnitude of association constants (KA), indicated specific complexation of particular analytes. Water solvation was shown to play an important role and resulted in a strong quenching of sensor fluorescence in the ON state. The lead compound was embedded into silica nanoparticles and advantageous sensing properties towards K+ were demonstrated in water (λF = 671 nm, apparent KA = 82 M-1, increase of 17×), even in the presence of (supra)physiol. concentrations of Na+ and Ca2+.

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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. 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: 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.

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

Here is just a brief introduction to this compound(56413-95-7)COA of Formula: 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

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.Novakova, Veronika; Laskova, Miroslava; Vavrickova, Hana; Zimcik, Petr researched the compound: 5,6-Dichloropyrazine-2,3-dicarbonitrile( cas:56413-95-7 ).Related Products of 56413-95-7.They published the article 《Phenol-Substituted Tetrapyrazinoporphyrazines: pH-Dependent Fluorescence in Basic Media》 about this compound( cas:56413-95-7 ) in Chemistry – A European Journal. Keywords: zinc phenol substituted tetrapyrazinoporphyrazine preparation pH dependent fluorescence; phenol deprotonation switching off red fluorescence tetrapyrazinoporphyrazine solution microemulsion; azaphthalocyanines; fluorescence; intramolecular charge transfer; pH sensors; phthalocyanines. We’ll tell you more about this compound (cas:56413-95-7).

Tetrapyrazinoporphyrazines (TPyzPzs) bearing one, two, four or eight 3,5-di(tert-butyl)-4-hydroxyphenol moieties were synthesized as Zn(II) complexes and metal-free derivatives The deprotonation of the phenol using Bu4NOH induced the formation of a strong donor for intramol. charge transfer that switched OFF the red fluorescence (λF∼660 nm) of the parent Zn TPyzPzs. The changes were fully reversible for TPyzPzs with one to four phenolic moieties, and an irreversible modification was observed for TPyzPzs substituted with eight phenols. The sensors were anchored to lipophilic particles in H2O, and a pKa ∼12.5-12.7 was determined for the phenolic hydroxyl based on fluorescence changes in different buffers. A novel concept for fluorescence OFF-ON-OFF switching in metal-free TPyzPzs bearing phenolic moieties upon addition of specific amounts of base was 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

Related Products of 3685-23-2. 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: cis-4-Aminocyclohexane carboxylic acid, is researched, Molecular C7H13NO2, CAS is 3685-23-2, about Analysis of metabolites and metabolic mechanism in Bt transgenic and non-transgenic maize. Author is Zhang, Liyuan; Yu, Runzhong; Yu, Yingbo.

The gas chromatog.-mass spectrometry was used to isolate and identify metabolites of non-transgenic and Bacillus thuringiensis transgenic maize. The non-targeted metabolomics technique was used to anal. the metabolic pathway and mechanism of two kinds of maize. The methanol was used as extractant and the N,O-bis(trimethylsilyl) trifluoroacetamide was used as derivatization reagent. 38 kinds of metabolites were isolated and identified from non-transgenic maize, and 61 kinds of metabolites were isolated and identified in Bacillus thuringiensis transgenic maize. The specific metabolites between non-transgenic and Bacillus thuringiensis transgenic maize were analyzed. The metabolic pathway of specific metabolites was analyzed by KEGG annotation. The metabolic mechanism of non-transgenic maize and Bacillus thuringiensis transgenic maize was explored. The result indicated there were more metabolites involved in metabolic pathways in Bacillus thuringiensis transgenic maize than in non-transgenic maize, and tricarboxylic acid cycle and energy metabolism pathways of Bacillus thuringiensis transgenic maize are found to be higher than that of non-transgenic maize. The metabolic pathway of Bacillus thuringiensis transgenic maize conforms to the biol. activity law.

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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