Tag: M.W:300-400

Electric Literature of 36809-26-4, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 36809-26-4, Name is (4-Bromophenyl)diphenylamine, SMILES is BrC1=CC=C(N(C2=CC=CC=C2)C3=CC=CC=C3)C=C1, belongs to phthalazines compound. In a article, author is Fallah-Ghasemi Gildeh, Sara, introduce new discover of the category.

Experimental and DFT mechanistic insights into one-pot synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-diones under catalysis of DBU-based ionic liquids

Benzylation of DBU followed by anion exchange of the resulting salt with trifluoroacetate gave nearly quantitatively the ionic liquid [Bn-DBU][TFA]. It is shown here to be an efficient catalyst for the synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-dionesviathe three-component reaction of phthalhydrazide, aromatic aldehydes, and active alpha-methylene nitriles. DFT calculations at the B3LYP/SVP level and the experimental results are in agreement with a three-step mechanism for this reaction. Based on the DFT calculations, the catalytic effect largely arises from the intrinsic ionic properties of the ionic liquid rather than its action as a simple base. These calculations also predict the existence of two close-in-energy activated complexes whose rate determining roles and energies depend on their interaction with the anionic component of the ionic liquid, as [Bn-DBU][TFA] has shown a higher catalytic activity than [Bn-DBU][OAc]. This mechanistic approach opens up new and promising insights into the rational design of ionic liquid catalysts for the synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-diones. The synthetic method presented here has several prominent advantages.

Electric Literature of 36809-26-4, Consequently, the presence of a catalyst will permit a system to reach equilibrium more quickly, but it has no effect on the position of the equilibrium as reflected in the value of its equilibrium constant.I hope my blog about 36809-26-4 is helpful to your research.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 1439-36-7, Name is 1-(Triphenylphosphoranylidene)propan-2-one, molecular formula is C21H19OP. In an article, author is Ebrahimiasl, Hakimeh,once mentioned of 1439-36-7, Category: phthalazines.

Synthesis of Fe3O4-supported Schiff base Cu (II) complex: a novel efficient and recyclable magnetic nanocatalyst for one-pot three-component synthesis of quinolin-5-one, chromene-3-carbonitrile and phthalazine-5,10-dione derivatives

In this research, synthesis and characterization of a novel Schiff base Cu (II) complex immobilized on Fe3O4@SiO(2)nanoparticles are reported. Then, the catalytic activity of these nanoparticles as magnetic recyclable nanocatalyst was explored for the one-pot three-component synthesis of quinolin-5-one, chromene-3-carbonitrile and phthalazine-5,10-dione derivatives. The reactions proceeded smoothly to provide the respective products in excellent yields under green conditions. Facile preparation of the catalyst, high yields of the products, low reaction times, and use of water as green solvent are the main advantages of the present protocol. Moreover, the catalyst can be easily separated from the reaction mixture in a magnetic field, recycled and reused for six consecutive fresh runs without considerable loss of catalytic activity. Graphic abstract

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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 14348-75-5, Name is 2,7-Dibromo-9H-fluoren-9-one, formurla is C13H6Br2O. In a document, author is Park, Hae-Sun, introducing its new discovery. Formula: C13H6Br2O.

Discovery and synthesis of novel allylthioaralkylthiopyridazines: their antiproliferative activity against MCF-7 and Hep3B cells

A new series of 6-allylthio-3-aralkylthio-4,5-dimethylpyridazines 5a-5k and 1-allylthio-4-alkylthio5,6,7,8-tetrahydrophthalazine 6a-6j was synthesized from maleic anhydride derivatives for development of new anticancer agents. The process involves the formation of pyridazine and phthalazine rings, dichlorination, allylthiolation, and aralkylthiolation. These new compounds showed antiproliferative activities against breast cancer (MCF-7) and hepatocarcinoma (Hep3B) cells in CCK-8 assays, and could be promising candidates for chemotherapy of carcinomas. Among 21 synthesized compounds, five compounds (5a, 5b, 6b, 6d, and 6f) showed higher potency than 5-FU for inhibiting the growth of cell line. The results indicated that compound 6f had the highest activity towards MCF-7 and Hep3B cells. These results suggest the potential anticancer activity of compounds 5a, 5b, 6b, 6d, and 6f.

I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 14348-75-5 help many people in the next few years. Formula: C13H6Br2O.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 81-48-1, Name is 1-Hydroxy-4-(p-tolylamino)anthracene-9,10-dione, molecular formula is C21H15NO3. In an article, author is Simijonovic, Dusica,once mentioned of 81-48-1, Recommanded Product: 81-48-1.

A new efficient domino approach for the synthesis of pyrazolyl-phthalazine-diones. Antiradical activity of novel phenolic products

Pyrazolyl-phthalazine-dione derivatives (PPDs) were synthetized in the ionic liquid catalyzed one-pot multicomponent reaction of acetylacetone, 2,3-dihydrophthalazine-1,4-dione, and different aldehydes in moderate to good yields. Six new PPDs were obtained, and the crystal structure of 2-acetyl-1-(4-fluorophenyl)- 3-methyl-1H-pyrazolo[1,2-b] phthalazine-5,10-dione (PPD-4) was determined. The most interesting structural features of the novel PPD-4 is the formation of a rather short intermolecular distance between the F atom of one molecule and the midpoint of the neighbouring six-membered heterocyclic ring. This interaction arranges all molecules into parallel supramolecular chains. UV-Vis spectra of all PPDs were acquired and compared to the simulated ones obtained with TD-DFT. All synthetized compounds were subjected to evaluation of their in vitro antioxidative activity using a stable DPPH radical. It was shown that PPD-7, with a catechol motive, is the most active antioxidant, while PPD-9, with two neighbouring methoxy groups to the phenolic OH, exerted a somewhat lower, but significant antioxidative potential. The results of DFT thermodynamical study are in agreement with experimental findings that PPD-7 and PPD-9 should be considered as powerful radical scavengers. In addition, the obtained theoretical results (bond dissociation and proton abstraction energies) specify SPLET as a prevailing radical scavenging mechanism in polar solvents, and HAT in solvents with lower polarity. On the other hand, the obtained reaction enthalpies for inactivation of free radicals suggest competition between HAT and SPLET mechanisms, except in the case of the (OH)-O-center dot radical in polar solvents, where HAT is labeled as prefered.

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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

Reactions catalyzed within inorganic and organic materials and at electrochemical interfaces commonly occur at high coverage and in condensed media, causing turnover rates to depend strongly on interfacial structure and composition, 1439-36-7, Name is 1-(Triphenylphosphoranylidene)propan-2-one, SMILES is CC(C=P(C1=CC=CC=C1)(C2=CC=CC=C2)C3=CC=CC=C3)=O, in an article , author is Reddy, K. R. Vijayapal, once mentioned of 1439-36-7, Application In Synthesis of 1-(Triphenylphosphoranylidene)propan-2-one.

POLYANILINE SULFATE SALT CATALYZED ONE-POT THREE-COMPONENT SYNTHESIS OF 2H-INDAZOLO[2,1-b]PHTHALAZINE-TRIONES

An alternative route has been developed for the synthesis of 2H indazolo[2,1-b]pthalazine-trione derivativesby one pot three component condensation reaction of benzaldehydes (1a-n)pthalhydrazide(2) and 5,5 dimethyl -1,3-cyclohexanedione (3) along with acetonitrile and DMF solvent systemusing polyaniline sulfate salt (PASS) as a catalystin good to excellent yields.

But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 1439-36-7, you can contact me at any time and look forward to more communication. Application In Synthesis of 1-(Triphenylphosphoranylidene)propan-2-one.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 523-27-3, Name is 9,10-Dibromoanthracene, molecular formula is C14H8Br2, belongs to phthalazines compound. In a document, author is Hamidinasab, Mahdia, introduce the new discover, Quality Control of 9,10-Dibromoanthracene.

Green one-pot synthesis of 2H-indazolo[2,1-b]phthalazine-triones: a comparative study of heterogeneous solid acid catalysts with magnetic core

The catalytic activity of four heterogeneous solid acid catalysts with magnetic core and sulfonic acid groups is evaluated and compared using one-pot three component synthesis of phthalazine-trione derivatives under solvent-free condition. The NiFe2O4 particles were selected as magnetic core, due to their enhanced chemical and magnetic stability. Furthermore, the desired products were obtained in excellent yields at short reaction times and environmentally friendly condition using the novel and reusable sulfonic acid grafted onto TiO2-coated nickel ferrite nanoparticles. This protocol avoids the use of expensive catalysts, toxic solvents and harsh reaction conditions.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 523-27-3. Quality Control of 9,10-Dibromoanthracene.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 143-66-8, Name is Sodium tetraphenylborate, molecular formula is C24H20BNa, belongs to phthalazines compound. In a document, author is Mohamadpour, Farzaneh, introduce the new discover, Recommanded Product: Sodium tetraphenylborate.

Four-component clean process for the eco-friendly synthesis of 1H-pyrazolo [1,2-b]phthalazine-5,10-dione derivatives using Zn(OAc)(2)center dot 2H(2)O as an efficient catalyst under solvent-free conditions

An efficient and convenient zinc acetate dihydrate (Zn(OAc)(2)center dot 2H(2)O) catalyzed synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-dione derivatives has been accomplished via one-pot four-condensation of phthalic anhydride, hydrazine monohydrate, aromatic aldehydes derivatives and malononitrile under solvent-free conditions. The notable advantages of the present procedure are: operational simplicity, eco-friendly, environmentally benign nature, low-cost and non-toxic catalyst, no necessity of chromatographic purification steps, short reaction times and good to high yields.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 143-66-8. Recommanded Product: Sodium tetraphenylborate.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. In an article, author is Hamidinasab, Mahdia, once mentioned the application of 14348-75-5, Name is 2,7-Dibromo-9H-fluoren-9-one, molecular formula is C13H6Br2O, molecular weight is 337.99, MDL number is MFCD00010790, category is phthalazines. Now introduce a scientific discovery about this category, Application In Synthesis of 2,7-Dibromo-9H-fluoren-9-one.

Green synthesis of 1H-pyrazolo[1,2-b]phthalazine-2-carbonitrile derivatives using a new bifunctional base-ionic liquid hybrid magnetic nanocatalyst

The ionic liquid-base N,N,2,2,6,6-hexamethyl-N-(3-(trimethoxysilyl)propyl)piperidin-4-amonium iodide was grafted onto titana-coated NiFe2O4 nanoparticles for obtaining an efficient and reusable ionic liquid-base hybrid nanocatalyst. The structure of hybrid nanoparticles was characterized using FT-IR (Fourier-transform infrared spectroscopy), field emission scanning electron microscopy, EDS (energy-dispersive X-ray spectroscopy), EDS map scan, Brunauer-Emmett-Teller surface area analysis, CHN (elemental analysis), vibrating sample magnetometer and thermogravimetric analysis techniques. Furthermore, this novel hybrid catalyst was used in one-pot three-component synthesis of 3-amino-1-aryl-5,10-dioxo-1H-pyrazolo[1,2-b]phthalazine-2-carbonitrile derivatives under green and environmentally benign conditions. This protocol avoids the use of harmful catalysts, toxic solvents and harsh reaction conditions. The products were synthesized in excellent yields within short reaction time and identified using elemental analysis, FT-IR, H-1 NMR and C-13 NMR spectroscopies.

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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

14348-75-5, Name is 2,7-Dibromo-9H-fluoren-9-one, molecular formula is C13H6Br2O, belongs to phthalazines compound, is a common compound. In a patnet, author is Dong, Chune, once mentioned the new application about 14348-75-5, Formula: C13H6Br2O.

A New Pathway for Phthalazine Derivatives via Metal-Free Cyclization of ortho-Alkynylphenyl Ketones and Hydrazine

A one-step synthetic protocol for phthalazine derivatives has been developed. In the presence of Et3N, a series of phthalazine derivatives were conveniently prepared in high yield by the reaction of ortho-alkynylphenyl ketones and hydrazine under mild reaction conditions. The structure was unambiguously confirmed by X-ray crystallographic analysis of product 2i.

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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 81-48-1, Name is 1-Hydroxy-4-(p-tolylamino)anthracene-9,10-dione, SMILES is O=C(C1=C2C=CC=C1)C3=C(NC4=CC=C(C)C=C4)C=CC(O)=C3C2=O, belongs to phthalazines compound. In a document, author is Hirakawa, Shota, introduce the new discover, Formula: C21H15NO3.

Synthesis and Dynamic Behavior of an Anthyridine-Ligated Ruthenium Complex

A ruthenium complex containing a 1,9,10-anthyridine derivative, [Ru(L)(bpy)(2)](PF6)(2) ( [1] (PF6)(2); L = 1,13,14-triazadibenz[a,j]anthracene, bpy = 2,2′-bipyridyl), was synthesized. X-ray crystal structural analysis of [1](PF6)2 showed that L is coordinated to the Ru center as a bidentate ligand. When [1](PF6)(2) was dissolved in acetonitrile, a new complex incorporating one acetonitrile molecule, [Ru(L)(CH3CN)(bpy)(2)](PF6)(2) ([2] (PF6)(2)), was formed. X-ray crystallographic data revealed that, in [2](PF6)(2), L is coordinated to the Ru center in a monodentate fashion. The coordinated L in [2](PF6)(2) shows a unique haptotropic rearrangement in an acetonitrile solution.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 81-48-1 is helpful to your research. Formula: C21H15NO3.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem