Category: 2075-46-9

Adding a certain compound to certain chemical reactions, such as: 2075-46-9, name is 4-Nitro-1H-pyrazole, belongs to pyrazoles-derivatives compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 2075-46-9, name: 4-Nitro-1H-pyrazole

General procedure: To a solution of compound 18 (1.1 g, 10.0 mmol) and K2CO3 (2.1 g,15.0 mmol) in MeCN (20 mL) was added iodomethane (1.6 g,11.0 mmol) at room temperature. The reaction mixture was stirredovernight at 82 C. TLC showed the completion of the reactin. The resultingmixture was removed under vacuum. Water (20 mL) was addedto the residue, and the resultant mixture was extracted with EtOAc(2 ¡Á 50 mL). The organic layers were then washed with water followed by brine. The organic layers were dried over anhydrous sodium sulfate,filtered, and concentrated to provide 19a as a yellow solid(1.2 g,9.8 mmol, 98%) without further purification. MS (ESI) m/z: 128.1 [M+H]+

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 4-Nitro-1H-pyrazole, and friends who are interested can also refer to it.

Application of 2075-46-9,Some common heterocyclic compound, 2075-46-9, name is 4-Nitro-1H-pyrazole, molecular formula is C3H3N3O2, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

Intermediate 5: 1 H-Pyrazol-4-amine. 4-Nitro-1H-pyrazole (Manchester organics; 1.13 g, 9.99 mmol) was dissolved in ethanol (50 ml). This solution was added carefully to 10% palladium on carbon (Aldrich; 102 mg) under a nitrogen atmosphere. The atmosphere was exchanged to hydrogen, and the mixture was stirred vigorously at room temperature under a hydrogen atmosphere. After 45 min, ca. 700 ml of hydrogen had been taken up, and no further hydrogen was taken up over the next 30 min. Stirring was stopped and the atmosphere was exchanged to nitrogen. The solution was filtered through cellite (10 g cartridge) and washed with further ethanol (150 ml). Relevant fractions (as verified by TLC) were combined and concentrated in vacuo to give a red oil. Trituration with DCM gave the title compound (815 mg) as a red solid; 1 H NMR (MeOH-d4, 400 MHz) delta (ppm) 7.20 (2 H, s).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 4-Nitro-1H-pyrazole, its application will become more common.

Related Products of 2075-46-9, In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 2075-46-9 as follows.

Intermediate 5: 1 H-Pyrazol-4-amine. 4-Nitro-1H-pyrazole (Manchester organics; 1.13 g, 9.99 mmol) was dissolved in ethanol (50 ml). This solution was added carefully to 10% palladium on carbon (Aldrich; 102 mg) under a nitrogen atmosphere. The atmosphere was exchanged to hydrogen, and the mixture was stirred vigorously at room temperature under a hydrogen atmosphere. After 45 min, ca. 700 ml of hydrogen had been taken up, and no further hydrogen was taken up over the next 30 min. Stirring was stopped and the atmosphere was exchanged to nitrogen. The solution was filtered through cellite (10 g cartridge) and washed with further ethanol (150 ml). Relevant fractions (as verified by TLC) were combined and concentrated in vacuo to give a red oil. Trituration with DCM gave the title compound (815 mg) as a red solid; 1 H NMR (MeOH-d4, 400 MHz) delta (ppm) 7.20 (2 H, s).

According to the analysis of related databases, 2075-46-9, the application of this compound in the production field has become more and more popular.

Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 2075-46-9, name is 4-Nitro-1H-pyrazole, A new synthetic method of this compound is introduced below., Safety of 4-Nitro-1H-pyrazole

At 0 C,Concentrated sulfuric acid (50 ml)Was slowly added to the pyrazole (14 g)Concentrated nitric acid (9.2 ml) was then slowly added to the mixture, and the reaction was stirred at 60 C for 1.5 hours.After completion of the reaction, the reaction solution was slowly added to an appropriate amount of ice water, and the resulting white solid was separated by filtration, and the resulting solid was allowed to dry in air,The filtrate was extracted with ethyl acetate (30 ml x 3)The organic phase liquid was then rotary evaporated and dried, and finally the two parts of the solid were combined to give the compound 1a,1a (6 mmol) was dissolved in dry DMF (6 ml)Then, K2CO3 (9 mmol), methyl iodide (12 mmol),The reaction was stirred at room temperature for 16 hours.After completion of the reaction, the reaction solution was extracted with water and ethyl acetate (25 ml x 3)The organic phase was then removed with anhydrous magnesium sulfate.Finally, the organic phase was evaporated under vacuum to dryness to give a crude product,And purified by silica gel column chromatography to obtain Compound 2a.Compound 2a (2 mmol) was dissolved in absolute ethanol (5 ml)Then, palladium carbon (0.04 g) was added successively thereto,Hydrazine hydrate (1 ml), and the reaction solution was stirred at 80 C for 10 minutes.After completion of the reaction, the reaction solution was filtered to remove palladium carbon, and the filtrate was evaporated to dryness under reduced pressure in vacuo to give Compound 3a.Bromoacetic acid (2 mmol) was dissolved in dichloromethane (15 ml), and HOBt (2 mmol) was added thereto successively,EDC (2 mmol), and the reaction solution was stirred at room temperature for 30 minutes,The resulting 3a was then added and the reaction was stirred at room temperature for 12 hours.After completion of the reaction, the reaction solution was extracted with water and dichloromethane (30 ml x 3)Finally, the organic phase liquid was evaporated to dryness and the resulting crude product was purified by silica gel column chromatography to obtain Compound 4a.The resulting compound 4a, indole (2 mmol), NaH (2.4 mmol) was added to dry DMF (10 mL)The reaction solution was stirred at room temperature for 12 hours, and then quenched by adding saturated brine to the reaction.The resulting reaction mixture was extracted with saturated brine and ethyl acetate (30 mL x 3)The organic phase was then removed with anhydrous magnesium sulfate.Finally, the organic phase was evaporated under vacuum to dryness to give a crude product,And purified by silica gel column chromatography to obtain the final compound 5a to give a red solid powder in a yield of 60%

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Synthetic Route of 2075-46-9, A common heterocyclic compound, 2075-46-9, name is 4-Nitro-1H-pyrazole, molecular formula is C3H3N3O2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

[0223j To a mixture of 4-nitro-1H-pyrazole (113 mg, 1 mmol, 1.0 eq) in CH3CN (5 mL), 1-bromo-2-methoxyethane (138 mg, 1 mmol, 1.0 equiv) and K2C03 (276 mg, 2 mmol, 2.0 equiv) was added. The mixture was stirred at 80 C for 4 h. After diluted with EtOAc (100 mL), the mixture was washed with water (50 mL x 2). The organic layer was concentrated and purified by silica gel column (petroleum ether/EtOAc = 10 : 1) to give 1-(2-methoxyethyl)-4-nitro-1H- pyrazole (170 mg, yield: 100%) as a colorless oil. ESI-MS (M+H): 172.1. ?H NMR (400 MHz, CDC13) (5: 8.23 (s, 1H), 8.07 (s, 1H), 4.31 (t, J= 5.2 Hz, 2H), 3.74 (t, J= 5.2 Hz, 2H), 3.35 (s, 3H).

The synthetic route of 2075-46-9 has been constantly updated, and we look forward to future research findings.

Electric Literature of 2075-46-9, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 2075-46-9, name is 4-Nitro-1H-pyrazole belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.

General procedure: To a stirred solution of 4-nitro-1H-pyrazole (2 g, 17.7 mmol) inacetonitrile (15 mL) was added potassium carbonate (2.7 g, 19.5 mmol)and iodomethane (2.76 g, 19.5 mmol). The reaction mixture was stirredat reflux temperature for 6 h. And it was evaporated to dryness. Thecrude mass was purified by silica gel column chromatography (PE:EA=10:1) to afford compound 15c (2.2 g, 98%) as a white solid. MS(ESI) m/z 128 [M+H]+.

The synthetic route of 4-Nitro-1H-pyrazole has been constantly updated, and we look forward to future research findings.

Chemistry is an experimental science, Category: pyrazoles-derivatives, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 2075-46-9, Name is 4-Nitro-1H-pyrazole, molecular formula is C3H3N3O2, belongs to pyrazoles-derivatives compound. In a document, author is An, Yan.

Neuroprotective effect of novel celecoxib derivatives against spinal cord injury via attenuation of COX-2, oxidative stress, apoptosis and inflammation

A novel series of celecoxib derivatives were synthesized and evaluated for cyclooxygenase (COX-1/COX-2) in-hibitory activities for benefit in spinal cord injury (SCI). The title compounds were synthesized by conventional methods in good yields and subsequently tested for inhibitory activity against COX-1/COX-2. The most potent COX-2 inhibitor among the tested derivatives was further assayed for protective effect against experimental SCI of Sprague-Dawley rats. The designed compounds showed considerable inhibition of COX-2 as compared to COX -1 revealing compound 7m as most potent inhibitor of COX-2 isoenzyme (IC50 = 0.04 mu M). The expression of mitochondrial apoptotic genes (Bcl-2 and Bax) together with COX-2 and iNOS was restored near to normal as evidenced by western blot analysis in SCI rats. Taken altogether, compound 7m was identified as most potent inhibitor of COX-2. It also showed protective action against SCI via attenuation of COX-2, oxidative stress and apoptosis and inflammation in Male Sprague-Dawley rats.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 2075-46-9, in my other articles. Category: pyrazoles-derivatives.

Reference:
Pyrazole – Wikipedia,
,Pyrazoles – an overview | ScienceDirect Topics

Electric Literature of 2075-46-9, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, 2075-46-9, Name is 4-Nitro-1H-pyrazole, SMILES is C1=N[NH]C=C1[N+]([O-])=O, belongs to pyrazoles-derivatives compound. In a article, author is Pogaku, Vinay, introduce new discover of the category.

Synthesis and biological evaluation of new benzo[d][1,2,3]triazol-1-yl-pyrazole-based dihydro-[1,2,4]triazolo[4,3-a]pyrimidines as potent antidiabetic, anticancer and antioxidant agents

A series of new benzo[d][1,2,3]triazol-1-yl-pyrazole-based dihydro-[1,2,4]triazolo[4,3-a]pyrimidine derivatives 4a-p were synthesized and well characterized by using IR, H-1,C-13 NMR and mass spectral data. Finally, the structure of the compound 4l was solved unambiguously by single-crystal X-ray diffraction (SXRD) which confirms all the structures 4a-p. The in vitro alpha-glucosidase inhibition, anticancer (A549 and MCF-7 cell lines) and antioxidant studies of the title compounds 4a-pwere screened. Among all the compounds, 4g, 4h and 4n exhibited significant alpha-glucosidase inhibition activity with the IC(50)values 20.12 +/- 0.19 mu M, 21.55 +/- 0.46 mu M and 24.92 +/- 0.98 mu M. Similarly, the compounds 4h, 4d and 4e showed potent anticancer activity against A549 (human lung carcinoma) cell line with IC(50)values 3.64 mu M, 4.73 mu M and 4.56 mu M, respectively, whereas the compounds 4c and 4 o displayed potent anticancer activity against human breast cancer (MCF-7) cell line with IC50 values of 2.66 mu M and 2.11 mu M. In addition, the antioxidant activity revealed that the compounds 4e and 4h exhibited potent antioxidant activity (IC50: 4.25 mu M and 5.40 mu M). To determine the safety profile of the most active compounds4c,4d,4e,4g,4h,4n and 4o were tested against non-cancer HEK293 cell line (human embryonic kidney 293), results in the lower toxicity of these compounds. [GRAPHICS] .

Electric Literature of 2075-46-9, Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 2075-46-9.

Reference:
Pyrazole – Wikipedia,
,Pyrazoles – an overview | ScienceDirect Topics

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, 2075-46-9, Name is 4-Nitro-1H-pyrazole, SMILES is C1=N[NH]C=C1[N+]([O-])=O, in an article , author is Kang, Jin Mi, once mentioned of 2075-46-9, Recommanded Product: 2075-46-9.

Discovery of 1-(1H-indazol-4-yl)-3-((1-phenyl-1H-pyrazol-5-yl)methyl) ureas as potent and thermoneutral TRPV1 antagonists

A series of 1-indazol-3-(1-phenylpyrazol-5-yl)methyl ureas were investigated as hTRPV1 antagonists. The structure-activity relationship study was conducted systematically for both the indazole A-region and the 3-trifluoromethyl/t-butyl pyrazole C-region to optimize the antagonism toward the activation by capsaicin. Among them, the antagonists 26, 50 and 51 displayed highly potent antagonism with Ki(CAP) = 0.4-0.5 nM. Further, in vivo studies in mice indicated that these derivatives both antagonized capsaicin induced hypothermia, consistent with their in vitro activity, and themselves did not induce hyperthermia. In the formalin model, 51 showed antinociceptive activity in a dose-dependent manner.

Interested yet? Read on for other articles about 2075-46-9, you can contact me at any time and look forward to more communication. Recommanded Product: 2075-46-9.

Reference:
Pyrazole – Wikipedia,
,Pyrazoles – an overview | ScienceDirect Topics

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 2075-46-9, Name is 4-Nitro-1H-pyrazole, molecular formula is C3H3N3O2. In an article, author is Sivakumar, C.,once mentioned of 2075-46-9, Safety of 4-Nitro-1H-pyrazole.

Molecular spectroscopic investigation, quantum chemical, molecular docking and biological evaluation of 2-(4-Chlorophenyl)-1-[3-(4-chlorophenyl)-5-[4-(propan-2-yl) phenyl-3, 5-dihydro-1H-pyrazole-yl] ethanone

2-(4-Chlorophenyl)-1-[3-(4-chlorophenyl)-5-[4-(propan-2-yl)phenyl-3, 5-dihydro-1H-pyrazole-yl] ethanone (CCPPE) has been studied experimentally and theoretically. The structure of CCPPE was characterized by X-ray diffraction (XRD), and determined theoretically by the ab initio Hartree-Fock (HF) method and by the density functional theory(DFT) method B3LYP using the 6-311 ++ G (d, p) basis set. Theoretical topological analysis of the electron density, according to the Quantum Theory of Atoms in Molecule (AIM), electron localization function (ELF) and the localized orbital locator (LOL) have been performed. Fourier Transform Infrared (FTIR) and Fourier Transform Raman (FT-Raman) vibrational spectra were recorded and the observed frequencies were compared to those obtained from B3LYP/6-311G (d, p) and B3LYP/6-311 ++ G (d, p) calculations. The HOMO and LUMO energy results show that good exchange of charge happened inside the molecule. Molecular electrostatic potential was also performed. From the MEP it is evident that the negative charges cover the C = O group, the region having the positive potential are over the phenyl rings and the remaining species are surrounded by zero potential. Theoretical (TD-DFT) and experimental UV-Vis absorption wavelengths (lambda) were compared with each other. The stability of the molecule arising from hyper-conjugative interaction and charge delocalization has been analyzed using NBO analysis. The antimicrobial activity of the CCPPE was determined against bacterial strains such as Bacillus subtilis,Staphylococcus aureus, E.coli, Pseudomonas and fungal strains such as Candida albicans and A.niger. The obtained results show that the compound exhibited good to moderate antimicrobial activity. Molecular docking studies were executed to understand the inhibitory activity of CCPPE against antibacterial, antifungal, anti-inflammatory, antioxidant, antiviral activities. (C) 2020 Elsevier B.V. All rights reserved.

Interested yet? Keep reading other articles of 2075-46-9, you can contact me at any time and look forward to more communication. Safety of 4-Nitro-1H-pyrazole.

Reference:
Pyrazole – Wikipedia,
,Pyrazoles – an overview | ScienceDirect Topics