Tag: M.W=100-200

Recommanded Product: 56413-95-7. 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 Red-Emitting Fluorescence Sensors for Metal Cations: The Role of Counteranions and Sensing of SCN- in Biological Materials. Author is Lochman, Lukas; Machacek, Miloslav; Miletin, Miroslav; Uhlirova, Stepanka; Lang, Kamil; Kirakci, Kaplan; Zimcik, Petr; Novakova, Veronika.

The spatiotemporal sensing of specific cationic and anionic species is crucial for understanding the processes occurring in living systems. Herein, the authors developed new fluorescence sensors derived from tetrapyrazinoporphyrazines (TPyzPzs) with a recognition moiety that consists of an aza-crown and supporting substituents. Their sensitivity and selectivity were compared by fluorescence titration experiments with the properties of known TPyzPzs (with either one aza-crown moiety or two of these moieties in a tweezer arrangement). Method of standard addition was employed for analyte quantification in saliva. For K+ recognition, the new derivatives had comparable or larger association constants with larger fluorescence enhancement factors compared to that with one aza-crown. Their fluorescence quantum yields in the ON state were 18× higher than that of TPyzPzs with a tweezer arrangement. Importantly, the sensitivity toward cations was strongly dependent on counteranions and increased as follows: NO3- < Br- < CF3SO3- < ClO4- ≪ SCN-. This trend resembles the chaotropic ability expressed by the Hofmeister series. The high selectivity toward KSCN was explained by synergic association of both K+ and SCN- with TPyzPz sensors. The sensing of SCN- was further exploited in a proof of concept study to quantify SCN- levels in the saliva of a smoker and to demonstrate the sensing ability of TPyzPzs under in vitro conditions. If you want to learn more about this compound(5,6-Dichloropyrazine-2,3-dicarbonitrile)Recommanded Product: 56413-95-7, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(56413-95-7).

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 56413-95-7. 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 Bulky 2,6-diphenylphenylsulfanyl substituents efficiently inhibit aggregation in phthalocyanines and tetrapyrazinoporphyrazines and control their photophysical and electrochemical properties. Author is Zimcik, Petr; Malkova, Anna; Hruba, Lenka; Miletin, Miroslav; Novakova, Veronika.

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.

If you want to learn more about this compound(5,6-Dichloropyrazine-2,3-dicarbonitrile)Related Products of 56413-95-7, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(56413-95-7).

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 Synthesis and studies on photodynamic activity of new water-soluble azaphthalocyanines, the main research direction is photodynamic activity water soluble azaphthalocyanine derivative; photosensitized photooxidation phenylisobenzofurane azaphthalocyanine derivative singlet oxygen generation.Category: chiral-oxygen-ligands.

Aza analogs of phthalocyanines (AzaPc’s) bearing four long chains with carboxy groups at the end and four “”bulky”” diethylamino groups on periphery were synthesized and characterized. Their sodium salts are very soluble in water. The first studies on photodynamic activity of this tetrapyrazinoporphyrazines (a type of AzaPc) are presented. The dye-sensitized photooxidation of 1,3-diphenylisobenzofurane via 1O2 was studied in pyridine. Their photodynamic activity in vitro was not detected due to the aggregation behavior of these compounds in water.

If you want to learn more about this compound(5,6-Dichloropyrazine-2,3-dicarbonitrile)Category: chiral-oxygen-ligands, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(56413-95-7).

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, Dyes and Pigments called Bulky 2,6-diphenylphenylsulfanyl substituents efficiently inhibit aggregation in phthalocyanines and tetrapyrazinoporphyrazines and control their photophysical and electrochemical properties, Author is Zimcik, Petr; Malkova, Anna; Hruba, Lenka; Miletin, Miroslav; Novakova, Veronika, the main research direction is magnesium zinc sulfanyl phthalocyanine tetrapyrazinoporphyrazine complex preparation redox potential; fluorescence magnesium zinc sulfanyl phthalocyanine tetrapyrazinoporphyrazine complex.Synthetic Route of 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.

If you want to learn more about this compound(5,6-Dichloropyrazine-2,3-dicarbonitrile)Synthetic Route of C6Cl2N4, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(56413-95-7).

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 Preparation of magnesium azaphthalocyanines by cyclotetramerization of S-substituted 4,5-disulfanylpyrazine-2,3-dicarbonitriles, published in 1996-12-31, which mentions a compound: 56413-95-7, mainly applied to magnesium azaphthalocyanine preparation cyclization disulfanylpyrazine dicarbonitrile; sulfanylpyrazine dicarbonitrile cyclization magnesium azaphthalocyanine preparation; carbonitrile disulfanylpyrazine cyclization magnesium azaphthalocyanine preparation; substituent cyclization disulfanylpyrazine dicarbonitrile azaphthalocyanine preparation, COA of Formula: C6Cl2N4.

Four novel S-substituted 4,5-disulfanylpyrazine-2,3-dicarbonitriles were obtained in a multistep synthesis from diaminomaleonitrile. Two of these dicarbonitriles, with Et or benzyl S-substituents, give pure Mg azaphthalocyanines in good yields when reacted with Mg propoxide in PrOH and dioxane. Aromatic S-substituents are less stable during the reaction conditions used for cyclizations, and product mixtures were obtained.

If you want to learn more about this compound(5,6-Dichloropyrazine-2,3-dicarbonitrile)COA of Formula: C6Cl2N4, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(56413-95-7).

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 Tetrapyrazinoporphyrazine with eight peripheral adamantanylsulfanyl units – Synthesis and physicochemical study. Author is Tillo, Adam; Kryjewski, Michal; Bendzinska-Berus, Wioletta; Langer, Dominik; Rebis, Tomasz; Popenda, Lukasz; Jurga, Stefan; Mielcarek, Jadwiga; Goslinski, Tomasz; Tykarska, Ewa.

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.

If you want to learn more about this compound(5,6-Dichloropyrazine-2,3-dicarbonitrile)Safety of 5,6-Dichloropyrazine-2,3-dicarbonitrile, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(56413-95-7).

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 Effective Monofunctional Azaphthalocyanine Photosensitizers for Photodynamic Therapy, published in 2009, which mentions a compound: 56413-95-7, Name is 5,6-Dichloropyrazine-2,3-dicarbonitrile, Molecular C6Cl2N4, HPLC of Formula: 56413-95-7.

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.

If you want to learn more about this compound(5,6-Dichloropyrazine-2,3-dicarbonitrile)HPLC of Formula: 56413-95-7, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(56413-95-7).

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 Structural factors influencing the intramolecular charge transfer and photoinduced electron transfer in tetrapyrazinoporphyrazines, published in 2014, which mentions a compound: 56413-95-7, Name is 5,6-Dichloropyrazine-2,3-dicarbonitrile, Molecular C6Cl2N4, Application of 56413-95-7.

Unsym. tetrapyrazinoporphyrazines (TPyzPzs) from the group of azaphthalocyanines with one peripherally attached amino substituent (donor) were synthesized, and their photophys. properties (fluorescence quantum yield and singlet oxygen quantum yield) were determined The synthesized TPyzPzs were expected to undergo intramol. charge transfer (ICT) as the main pathway for deactivating their excited states. Several structural factors play a critical role in ICT efficiency. The substituent in the ortho position to the donor center significantly influences the ICT, with tert-butylsulfanyl and butoxy substituents inducing the strongest ICTs, whereas chloro, Me, Ph, and hydrogen substituents in this position reduce the efficiency. The strength of the donor pos. influences the ICT efficiency and correlates well with the oxidation potential of the amines used as the substituents on the TPyzPz as follows: n-butylamine < N,N-diethylamine < aniline < phenothiazine. The ICT (with conjugated donors and acceptors) in the TPyzPz also proved to be much stronger than a photoinduced electron transfer in which the donor and the acceptor are connected through an aliphatic linker. If you want to learn more about this compound(5,6-Dichloropyrazine-2,3-dicarbonitrile)Application of 56413-95-7, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(56413-95-7).

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

HPLC of Formula: 56413-95-7. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. 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 amines. Author is Hou, Dongfeng; Matsuoka, Masaru.

Reaction of 2,3-dichloro-5,6-dicyanopyrazine (I) with amines gave mono-substituted or bis-substituted products (II; R1 = NH2, NHMe, NEt2, NMe2, pyrrolidino, morpholino; R2 = Cl, NH2, NHMe, NEt2, NHBu). Reaction if I with thioacetamide or 2,3-bis(N-methylamino)-5,6-dicyanopyrazine gave 1,4,6,9-tetraaza-2,3,7,8-tetracyanothianthrene or 2,3,7,8-tetracyano-1,4,6,9-tetraaza-5,10-dimethyl-5,10-dihydrophenazine, resp. Nonlinear optical properties for II as well as biol. activity of 2-[2-(diethylamino)vinyl]-3-chloro-5,6-dicyanopyrazine were evaluated.

There is still a lot of research devoted to this compound(SMILES：N#CC1=NC(Cl)=C(Cl)N=C1C#N)HPLC of Formula: 56413-95-7, and with the development of science, more effects of this compound(56413-95-7) can be discovered.

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: cis-4-Aminocyclohexane carboxylic acid(SMILESS: N[C@H]1CC[C@H](CC1)C(O)=O,cas:3685-23-2) is researched.Name: 2-Bromo-6-methylphenol. The article 《Synthesis of di- and tripeptides containing 4-aminocyclohexanecarboxylic acid》 in relation to this compound, is published in Journal of Organic Chemistry. Let’s take a look at the latest research on this compound (cas:3685-23-2).

Amino acid derivatives were coupled to cis- and trans-4-aminocyclohexanecarboxylic acid with diethylphosphoryl cyanide as coupling reagent. Treatment of trans-I (R = Me3CO2C, R1 = OH) with diethylphosphoryl cyanide, followed by condensation with L-valine Me ester gave trans I (R = Me3CO2C, R1 = Val-OMe) (II). Deprotection and coupling of II with N-tert-butoxycarbonyl-L-alanine gave trans-I (R = Me3CO2C-Ala-, R1 = Val-OMe). Similar transformations were effected with cis-I (R = Me3CO2C, R1 = OH). Other coupling procedures investigated were the carbodiimide, p-nitrophenyl active ester, and sym. anhydride methods, which were less satisfactory for coupling to cyclohexane amino acids.

If you want to learn more about this compound(cis-4-Aminocyclohexane carboxylic acid)Related Products of 3685-23-2, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(3685-23-2).

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