Tag: M.W=0-100

Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 35344-95-7, Name is 1H-Pyrazole-4-carbaldehyde, SMILES is O=CC1=CNN=C1, belongs to pyrazoles-derivatives compound. In a document, author is Gogoi, Pinku, introduce the new discover, Quality Control of 1H-Pyrazole-4-carbaldehyde.

In silico study, synthesis, and evaluation of the antimalarial activity of hybrid dimethoxy pyrazole 1,3,5-triazine derivatives

Malaria continues to become a major global health problem, particularly in Sub-Saharan Africa, Asia, and Latin America. The widespread emergence of resistance to first-line drugs has further bolstered an urgent need for a new and cost-effective antimalarial(s). Thus, the present study enumerates the synthesis of novel hybrid dimethoxy pyrazole 1,3,5-triazine derivatives 7(a-j) and their in silico results short-listed three compounds with good binding energies and dock scores. Docking analysis shows that hydrogen-bonding predominates and typically involves key residues, such as Asp54, Tyr170, Ile164, and Arg122. The in vitro antimalarial evaluation of three top-ranked compounds (7e, 7g, and 7h) showed half-maximal inhibitory concentration values range from 53.85 to 100 mu g/ml against chloroquine-sensitive strain 3D7 of Plasmodium falciparum. Compound 7e may be utilized as a lead for further optimization work in drug discovery due to good antimalarial activity.

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 35344-95-7 is helpful to your research. Quality Control of 1H-Pyrazole-4-carbaldehyde.

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

Related Products of 67-51-6,Some common heterocyclic compound, 67-51-6, name is 3,5-Dimethyl-1H-pyrazole, molecular formula is C5H8N2, 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.

Step 1 1-(4-Methoxy-phenyl)-3,5-dimethyl-1-H-pyrazole: The title compound was prepared from 4-methoxyphenylboronic acid (1.58 g, 10.4 mmol), 3,5-dimethyl-1H-pyrazoles (0.5 g, 5.2 mmol) using the general procedure A with a yield of 90% (0.9 g,); MS (APCI) m/z: 203 (M+1, 100).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 3,5-Dimethyl-1H-pyrazole, its application will become more common.

Application of 288-13-1, Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 288-13-1, name is 1H-Pyrazole, This compound has unique chemical properties. The synthetic route is as follows.

4-Iodopyrazole (20) [0159] A flask equipped with a nitrogen inlet, an addition funnel, a thermowell, and a mechanical stirrer was charged with pyrazole (1, 450 g, 6.62 mol) and tetrahydrofuran (THF, 5 L) at ambient temperature. The mixture was then cooled to 10 C. and N-iodosuccinimide (NIS, 1490 g, 6.62 mol, 1.0 equiv) was added to the mixture in portions as a solid at approximately 10 C. The resulting reaction mixture was then stirred at ambient temperature for 1 hour (longer reaction times may be necessary depending on ambient temperature). The mixture was then filtered and the THF was removed under reduced pressure. The residue was suspended in ethyl acetate (6 L) and insoluble materials were filtered. The dark filtrate was sequentially washed with saturated aqueous sodium thiosulfate solution (2¡Á3 L) (organic layer lightens to a pale yellow), water (2¡Á3 L), and brine (2 L). The resulting organic layer was then dried over sodium sulfate, filtered, and concentrated under reduced pressure to afford 4-iodopyrazole (1138 g, 1284.1 g theoretical, 88.6%) as a white to pale yellow solid after being dried in a vacuum oven at approximately 30 C. overnight. 1H NMR (400 MHz, DMSO-d6) delta 13.17 (bs, 1H), 7.93 (bs, 1H), 7.55 (bs, 1H) ppm; C3H31N2 (MW, 193.97), LCMS (EI) m/e 195 (M++H).

The chemical industry reduces the impact on the environment during synthesis 1H-Pyrazole. I believe this compound will play a more active role in future production and life.

Related Products of 132712-71-1, A common heterocyclic compound, 132712-71-1, name is 3-Methyl-1H-pyrazol-5-ol, molecular formula is C4H6N2O, 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.

General procedure: Dichloromethane (10 mL) was taken in a round-bottomed flask,into which 1.0 equivalent (1 mmol) of triethylamine and pyrazolonewere poured. The mixture was stirred for 2 min without heating. To this mixture, 1.0 equivalent of corresponding presynthesized benzylidene from malononitrile was added. Then the mixture was agitated for 25-30 min. The reaction was observed by TLC. The desired products appeared as precipitates. The precipitates were washed with water to remove the unreacted pyrazolone to obtain pure products. Melting points were recordedfor crystalline substances.

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.

Adding a certain compound to certain chemical reactions, such as: 1904-31-0, name is 1-Methyl-1H-pyrazol-3-amine, 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 1904-31-0, category: pyrazoles-derivatives

2-Bromo-5-(4-methanesulfonyl-phenoxy)-pyridine (0.47 mmol), sodium-tert.-butylate (1.4 eq.), and 1 -methyl-1 H-pyrazole-3-amine (1.2 eq.) are dissolved in degassed dioxane (2.5 ml) and heated to 80 0C. Chloro-5 (di-2-norbornylphosphino)(2-dimethylaminoferrocene-1 -yl)palladium (II) (5.9 mg) in degassed dioxane (1 ml) is added and the reaction mixture is heated for 1 hour at 142 0C in the microwave. The reaction is quenched with ethylacetate (30 ml) and filtrated over celite. The solvent of the filtrate is removed in vacuo. [5-(4-Methanesulfonyl-phenoxy)-pyridine-2-yl]-(1- methyl-1 H-pyrazole-3-yl)-amine (“A27”) is obtained after reversed phase column chromatography (water / acetonitrile + 0.1 percent TFA) as orange powder in a yield of 55 percent; HPLC (method C): 1.57 min; LC-MS (method A): 0.787 min, 345.15 (M+H+);1H-NMR (DMSO-d6l 500 MHz): delta [ppm] 9.317 (s, 1H), 8.020 (d, 1 H, J=2.9 Hz), 7.883 {d, 2H, J=8.9 Hz), 7.504 (d, 1 H, J=2.2 Hz), 7.470 (dd, 1 H, J=2.9 Hz, J=9.0 Hz), 7.355 (d, 1 H, J=9.0 Hz), 7.125 (d, 2H, J=8.9 Hz), 6.268 (d, 1 H, J=2.2 Hz), 3.740 (s, 3H), 3.170 (s, 3H).Example 23

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Related Products of 132712-71-1, 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. 132712-71-1, name is 3-Methyl-1H-pyrazol-5-ol belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.

To 300 ml of N, N-dimethylformamide was added 22 g of 3-methylpyrazol-5-ol followed by 14 g of anhydrous potassium carbonate and 29 g of 3-nitrobromobenzene, and the mixture was stirred under heating and refluxing for 2 hours and then cooled At room temperature, ethyl acetate and water were added slowly, and the mixture was extracted, dried, concentrated and the residue was subjected to silica gel column chromatography to obtain 21 g of 3-methyl-1- (3-nitrophenyl) alcohol.

The synthetic route of 3-Methyl-1H-pyrazol-5-ol has been constantly updated, and we look forward to future research findings.

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. 31108-57-3, name is 1H-Pyrazole-4-carbonitrile, A new synthetic method of this compound is introduced below., Application In Synthesis of 1H-Pyrazole-4-carbonitrile

To a solution of II-D4a (180 mg, 0.4 mmol) in acetone (5 mL) were added K2C03 (116 mg, 0.8 mmol) and lH-pyrazole-4-carbonitrile (78.7 mg, 0.8 mmol) at 25C. The reaction mixture was stirred for 12 hours at 25C. The reaction mixture was added into saturated NH4Cl (30 mL) and the aqueous layer was extracted with EtOAc (3 x 20 mL). The combined organic layer was washed with saturated brine (50 mL), dried over anhydrous Na2S0 , filtered and concentrated to give product. The residue was purified by flash column (10-20% of EtOAc in PE) to afford the product. The product was purified by prep-HPLC to afford II-D5a (59.6 mg, 32%) as a solid. (2696) 1H NMR (400 MHz, CDCl3) dH 7.85 (s, 1H), 7.81 (s, 1H), 4.95 (dd, J= 18.0, 49.6 Hz, 2H), 2.59 (t, J= 8.8 Hz, 1H), 2.25-2.13 (m, 1H), 2.07-2.01 (m, 1H), 1.92-1.82 (m, 1H), 1.80-1.60 (m, 7H), 1.55-1.12 (m, 15H), 1.05-0.90 (m, 2H), 0.85-0.75 (m, 4H), 0.65 (s, 3H); ELSD purity, 99%; MS ESI calcd. for C27H40N3O2 [M+H]+ 438, found 438

The synthetic route of 31108-57-3 has been constantly updated, and we look forward to future research findings.

Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 31108-57-3, name is 1H-Pyrazole-4-carbonitrile, This compound has unique chemical properties. The synthetic route is as follows., COA of Formula: C4H3N3

To a solution of crude reactant SB-FF (50.7 mg, 0.122 mmol, theoretical amount) in anhydrous THF (1.5 mL) was added 4-cyanopyrazole (22.7 mg, 0.244 mmol) followed by potassium carbonate (33.7 mg, 0.244 mmol). The solution was stirred at 25 C overnight. Then the solution was diluted with ethyl acetate (100 mL). The resulting solution was washed with brine (2×50 mL), dried over magnesium sulfate and concentrated in vacuo. The crude product was purified by reverse phase prep-HPLC to afford desired product (14.2 mg, 0.0332 mmol, two steps overall yield=27%) as white solid. 1HNMR (400 MHz, CDC13) 5(ppm): 7.85 (s, 1H), 7.81 (s, 1H), 5.03- 4.87 (m, 2H), 4.62-4.50 (m, 1H), 2.63-2.62 (m, 1H), 2.30-2.20 (m, 1H), 2.05-1.95 (m, 2H), 1.90- 1.60 (m, 6H), 1.50-1.20 (m, 15H), 0.70 (s, 3H). 19FNMR (376 MHz, CDCI3) 5(ppm): -193.13. LCMS: rt = 2.13 mm, m/z = 428.0 [M+H]+

Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 31108-57-3.

31108-57-3, name is 1H-Pyrazole-4-carbonitrile, belongs to pyrazoles-derivatives compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. Computed Properties of C4H3N3

Prepared according General Procedure E, Step 2 from compound Cll (60 mg, 0.14 mmol) and lH-pyrazole-4-carbonitrile (63 mg, 0.67 mmol), with purification by column chromatography on silica gel to provide compound 27 as an off-white solid (27.3 mg, 44%): mp 176-178 C; 1HNMR (300 MHz, CDCI3) delta 7.83 (d, J = 12.3 Hz, 2H), 4.95 (q, J = 18.3 Hz, 2H), 3.53 (d, J = 9.0 Hz, IH), 3.33 (s, 3H), 3.22 (d, J = 9.0 Hz, IH), 2.59 (t, J = 9.3 Hz, IH), 2.26-1.35 (m, 17H), 1.31-1.08 (m, 9H), 0.66 (s, 3H) ppm; ESI MS m/z 437 [M+H-H2Of .

The synthetic route of 31108-57-3 has been constantly updated, and we look forward to future research findings.

Synthetic Route of 1904-31-0, Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 1904-31-0, name is 1-Methyl-1H-pyrazol-3-amine, This compound has unique chemical properties. The synthetic route is as follows.

Accordingly, as shown in step 3-i of Scheme 3, 1-methyl-1H-pyrazol-3-amine (compound 1007, 2.8 g, 28.8 mmol) and 2,5-hexanedione (3.38 mL, 28.8 mmol) were dissolved into 50 mL of toluene. p-Toluenesulfonic acid (1.4 mmol) was added, the reaction mixture refluxed, and water generated from the reaction collected in a Dean-Stark trap.When no more water was generated (about 4 hours), the reaction mixture was cooled and the volatiles removed under reduced pressure.The residue was passed through a plug of silica gel using dichloromethane as eluent to yield an oil, which solidified upon standing.The solid was broken up, suspended in hexane, vigorously stirred for one hour, and collected by filtration to provide 3-(2,5-dimethyl-1H-pyrrol-1-yl)-1-methyl-1H-pyrazole (compound 1008, 5.0 g, 98percent yield) as a white powder: ESMS (M+1)=175; 1H-NMR (CDCl3) delta 7.38 (d, J=4 Hz, 1H), 6.14 (d, J=4 Hz, 1H), 5.84 (s, 2H), 3.95 (s, 3H), 2.09 (s, 6H).

The chemical industry reduces the impact on the environment during synthesis 1-Methyl-1H-pyrazol-3-amine. I believe this compound will play a more active role in future production and life.