Tag: M.W:200-300

Related Products of 1149-26-4, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 1149-26-4, Name is Z-L-Val-OH, SMILES is CC(C)[C@@H](C(O)=O)NC(OCC1=CC=CC=C1)=O, belongs to phthalazines compound. In a article, author is Martins, Felipe Terra, introduce new discover of the category.

Phthalazine-trione as a blue-green light-emitting moiety: crystal structures, photoluminescence and theoretical calculations

Phthalazine (2,3-diazanaphthalene) and phthalhydrazide (2,3-dihydro-1,4-phthalazinedione) compounds are heterocycles with several biological properties. Most recently, analogous phthalazine-triones also emerged as drug candidates. Herein, we introduced a phthalazine-trione moiety as a promising fluorophore in the blue and green spectral regions. This desired optical property was rationalized based on their crystal structure and time-dependent density functional theory (TD-DFT) calculations. Under ultraviolet (UV) excitation (ca. 360 nm), two light emission maxima at ca. 460 nm and 480 nm were observed for ten phthalazine-triones, regardless of the substitution pattern. This conservation in the light-emitting property was rationalized by our time-dependent DFT calculations for the three phthalazine-triones whose crystal geometries were also determined in this study (4-chlorophenyl, 3-methoxyphenyl and 4-nitrophenyl derivatives) and for those available in literature (4-fluorophenyl and 4-bromophenyl derivatives). Electronic transitions with the largest oscillator strengths were near 360 nm and were in excellent agreement with the experimental excitation energy (UV-visible and photoluminescence spectra). Lifetime values of selected samples could also be determined, which were between 1.59 ns and 3.21 ns. In all compounds, the Frontier molecular orbitals involved in these excitations were distributed over the phthalazine-trione moiety and were not localized on the changeable substituent.

Related Products of 1149-26-4, The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction.I hope my blog about 1149-26-4 is helpful to your research.

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

In an article, author is Keshipour, Sajjad, once mentioned the application of 789-25-3, Name is Triphenylsilane, molecular formula is C18H16Si, molecular weight is 260.4052, MDL number is MFCD00003003, category is phthalazines. Now introduce a scientific discovery about this category, SDS of cas: 789-25-3.

A novel one-pot isocyanide-based four-component reaction: synthesis of highly functionalized 1H-pyrazolo[1,2-b]phthalazine-1,2-dicarboxylates and 1H-pyrazolo[1,2-a]pyridazine-1,2-dicarboxylates

A new protocol has been developed for the efficient synthesis of structurally diverse 1H-pyrazolo[1,2-b] phthalazine-1,2-dicarboxylates and 1H-pyrazolo[1,2-a]pyridazine-1,2-dicarboxylates via a four-component reaction of hydrazine hydrate, dialkyl acetylenedicarboxylates, isocyanides and various cyclic anhydrides such as succinic anhydride, maleic anhydride and phthalic anhydride in ethanol/acetone (1:1) at room temperature in good to moderate yields. (C) 2012 Elsevier Ltd. All rights reserved.

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

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. Category: phthalazines, 7524-50-7, Name is H-Phe-OMe.HCl, SMILES is N[C@@H](CC1=CC=CC=C1)C(OC)=O.[H]Cl, in an article , author is Kashanna, Jajula, once mentioned of 7524-50-7.

2,3-Dihydrofurans as Potential Cytotoxic and Antibacterial Agents: Tandem Knoevenagel-Michael Cyclization for the Synthesis of 2,3-Dihydrofurans by Using alpha-Tosyloxy Ketone Precursors

Novel 2,3-dihydrofuran derivatives were synthesized through a tandem Knoevenagel-Michael cyclization in good yield by reacting alpha-tosyloxy ketone, 5,5-dimethyl-1,3-cyclohexanedione, and various aldehydes in the presence of phthalazine in acetonitrile. These compounds were subjected to in vitro antibacterial screening against eight micro-organisms by using diffusion method and also in vitro cytotoxicity screening against four human cancerous cell lines by applying MTT assay. Some of the compounds showed impressive activities.

But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 7524-50-7, you can contact me at any time and look forward to more communication. Category: phthalazines.

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

In an article, author is Shekouhy, Mohsen, once mentioned the application of 2128-93-0, HPLC of Formula: C19H14O, Name is 4-Benzoylbiphenyl, molecular formula is C19H14O, molecular weight is 258.31, MDL number is MFCD00003079, category is phthalazines. Now introduce a scientific discovery about this category.

Ultrasound-promoted catalyst-free one-pot four component synthesis of 2H-indazolo[2,1-b]phthalazine-triones in neutral ionic liquid 1-butyl-3-methylimidazolium bromide

A catalyst-free one-pot four component methodology for the synthesis of 2H-indazolo[2,1-b]phthalazine-triones under ultrasonic irradiation at room temperature using 1-butyl-3-methylimidazolium bromide, [Bmim]Br, as a neutral reaction medium is described. A broad range of structurally diverse aldehydes (aromatic aldehydes bearing electron withdrawing and/or electron releasing groups as well as heteroaromatic aldehydes) were applied successfully, and corresponding products were obtained in good to excellent yields without any byproduct. (C) 2011 Elsevier B.V. All rights reserved.

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

In an article, author is Mosaddegh, Elaheh, once mentioned the application of 789-25-3, Application In Synthesis of Triphenylsilane, Name is Triphenylsilane, molecular formula is C18H16Si, molecular weight is 260.4052, MDL number is MFCD00003003, category is phthalazines. Now introduce a scientific discovery about this category.

Preparation, characterization, and catalytic activity of Ca2CuO3/CaCu2O3/CaO nanocomposite as a novel and bio-derived mixed metal oxide catalyst in the green synthesis of 2H-indazolo[2,1-b]phthalazine-triones

As a novel and heterogeneous catalyst, the Ca2CuO3/CaCu2O3/CaO nanocomposite was synthesized via coprecipitation and thermal decomposition methods using CuSO4 and eggshell wastes as inexpensive starting materials. The catalytic activity of the mesoporous mixed metal oxide in the synthesis of 2H-indazolo[2,1-b]phthalazine-triones was investigated. The reaction proceeds to completion within 5-20 min with yields of 80-94%. The suggested strategy for synthesizing 2H-indazolo[2,1-b]phthalazine-triones is of great interest because a novel, green, and low-cost mixed metal oxide is used as a heterogeneous catalyst, on account of its convenient preparation, short reaction time, and high reusability without any loss of catalytic activity. (C) 2015 Elsevier B.V. All rights reserved.

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

In an article, author is Shalkouhi, Somaye Nikzad, once mentioned the application of 80382-23-6, HPLC of Formula: C15H17NaO3, Name is Sodium 2-(4-((2-oxocyclopentyl)methyl)phenyl)propanoate, molecular formula is C15H17NaO3, molecular weight is 268.2835, MDL number is MFCD00941425, category is phthalazines. Now introduce a scientific discovery about this category.

Synthesis, characterization and catalytic application of Fe3O4@Cys-SO3H for preparation of 2H-indazolo[1,2-b]phthalazine-triones

The surface of Fe3O4 magnetic nanoparticles (MNPs) was modified by L-cysteine through condensation of COOH groups of L-cysteine and OH groups on the surface of Fe3O4. The -SH group of prepared Fe3O4@Cys MNPs oxidized to -SO3H group and Fe3O4@Cys-SO3H as an environmentally friendly magnetic nanoparticle was prepared. The MNPs were characterized by FT-IR, XRD, SEM and TEM studies. Then, the catalytic activity of the MNPs was evaluated as an effective and reusable catalyst for one-pot synthesis of 2H-indazolo [1,2-b] phthalazine-triones derivatives. The results show that the catalytic activity of Fe3O4@Cys-SO3H was comparable to that of other reported heterogeneous and homogeneous catalysts.

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

Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics, Computed Properties of C12H19NO4S, 608141-42-0, Name is (S)-1-(3-Ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethanamine, SMILES is O=S(C[C@@H](N)C1=CC=C(OC)C(OCC)=C1)(C)=O, belongs to phthalazines compound. In a document, author is Wang, Yuxiang, introduce the new discover.

Cascade Oxidation/Halogenoaminocyclization Reaction of Trifluoromethylated Homoallylic N-Acylhydrazines: Metal-free Synthesis of CF3-Substituted Pyrazolines

An efficient and practical cascade oxidation/halogenoaminocyclization of trifluoromethylated homoallylic N-acylhydrazines is developed. The protocol enables an efficient access to various biologically interesting CF3-containing pyrazoline compounds from readily accessible trifluoromethylated homoallylic N-acylhydrazines in good to excellent yields under mild conditions without any other additives or catalysts. The produced pyrazoline compounds can be further manipulated to other more complicated derivatives through transformation of residual halogen atom.

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 608141-42-0. Computed Properties of C12H19NO4S.

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

Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 838-88-0, Name is 4,4′-Methylenebis(2-methylaniline), SMILES is NC1=CC=C(CC2=CC=C(C(C)=C2)N)C=C1C, belongs to phthalazines compound. In a document, author is Im, Jeong Kyun, introduce the new discover, HPLC of Formula: C15H18N2.

N-Chlorinative Ring Contraction of 1,4-Dimethoxyphthalazines via a Bicyclization/Ring-Opening Mechanism

An unprecedented N-chlorinative ring contraction of 1,2-diazines was discovered and investigated with an electrophilic chlorinating reagent, trichloroisocyanuric acid (TCICA). Through optimization and mechanistic analysis, the assisting role of n-Bu4NCl as an exogenous nucleophile was identified, and the optimized reaction conditions were applied to a range of 1,4-dimethoxyphthalazine derivatives. Also, an improvement of overall efficiency was demonstrated by the use of a labile O-silyl group. A bicyclization/ring-opening mechanism, inspired by the Favorskii rearrangement, was proposed and supported by the DFT calculations. Furthermore, the efforts on scope expansion as well as the evaluation of other electrophilic promoters revealed that the newly developed ring contraction reactivity is a unique characteristic of 1,4-dimethoxyphthalazine scaffold and TCICA.

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 838-88-0 is helpful to your research. HPLC of Formula: C15H18N2.

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

54381-16-7, Name is 2,2′-((4-Aminophenyl)azanediyl)diethanol sulfate, molecular formula is C10H18N2O6S, Recommanded Product: 54381-16-7, belongs to phthalazines compound, is a common compound. In a patnet, author is Bai, Li-Gang, once mentioned the new application about 54381-16-7.

Base-promoted aerobic oxidation of N-alkyl iminium salts derived from isoquinolines and related heterocycles

Potassium tert-butoxide-promoted aerobic oxidation of N-alkyl iminium salts is reported. The reaction is atom-economical and environmentally friendly. Iminium salts derived from isoquinoline, quinoline, phenanthridine, phenanthroline, and phthalazine were successfully transformed into their corresponding unsaturated lactams with up to 95% yield under mild conditions in the absence of photocatalysts and metallic or organic catalysts. Owing to the general substrate scope, low cost, feasibility of scale up, wide availability of reagents, and green reaction conditions, this method shows great potential for preparing isoquinolones and related compounds. The method was applied for atom- and step-economical total synthesis of natural products such as norketoyobyrine.

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

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 2215-77-2, Name is 4-Phenoxybenzoic acid, SMILES is OC(=O)C1=CC=C(OC2=CC=CC=C2)C=C1, in an article , author is Sadimenko, Alexander P., once mentioned of 2215-77-2, Recommanded Product: 4-Phenoxybenzoic acid.

Organometallic complexes of functionalized chelating azines

Organometallic compounds of the chelating azines containing carbonyl, hydroxyl, thiol, selenol, amino, imino, phosphino, thienyl, indolyl, carbazolyl, pyrazolyl, imidazolyl, 1,2,3-triazolyl, and N-heterocyclic carbene functionalities are reviewed. Synthesis and coordination modes, the role of the discussed compounds in catalysis, materials chemistry, photochemistry, and microbiology are highlighted.

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