Category: 1897-52-5

1897-52-5, name is 2,6-Difluorobenzonitrile, belongs to nitriles-buliding-blocks compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. COA of Formula: C7H3F2N

4.5 g of 2,6-difluorobenzonitrile and 45.3 g of xylene were added to a 200 mL four-necked flask under nitrogen atmosphere at room temperature and stirred, then 21.7 g of a methylmagnesium chloride solution (3.0 M THF solution) was added at room temperature Was added dropwise over 1 hour. The resulting mixture was stirred at room temperature for 19 hours,Was added dropwise to 31.5 g of a 20% sulfuric acid aqueous solution.The obtained mixture was heated to 50 C. and liquid separation was carried out,9.1 g of water was added to the organic layer, and the mixture was separated at 50 C.The obtained organic layer was analyzed by a high performance liquid chromatograph internal standard method, and 4.8 g of 2,6-difluoroacetophenone was confirmed to be contained (yield 95%)

The synthetic route of 1897-52-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Sumitomo Chemical Corporation; Ito, Tadataka; Hiraguri, Natsuru; (7 pag.)JP2016/169165; (2016); A;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Synthetic Route of 1897-52-5, The chemical industry reduces the impact on the environment during synthesis 1897-52-5, name is 2,6-Difluorobenzonitrile, I believe this compound will play a more active role in future production and life.

Take 2 L four bottles, add 600 mL of 60% sulfuric acid, electric stirring by adding 2,6_ difluorobenzonitrile 139.0 g (1.0 mol). Under N2 protection, the control reaction temperature was below 35 C, and 250 mum g of KBr03 (1.5 mol) was added to 10 batches. TLC monitoring, reaction 5-6 days, until the raw material point disappears, stop the reaction, the preparation of 800 mL 20% ice salt solution, the reaction solution Into the ice salt. After the product settling, the rapid filtration, the orange crude products, with CC14 dissolved crude products, respectively, with 5% Of NaHS03 solution, saturated Na2C03 solution and water to the solution was neutral, dried over anhydrous sodium sulfate, the solution was filtered, the water bath 60 C steamed to obtain light yellow liquid, rest for some time to cool into a pale yellow solid, vacuum distillation, warm water condensing steam, oil The bath was heated to 90 C and the fraction at a steam temperature of 58-62 C was cooled to give a white solid product in 71% yield

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 2,6-Difluorobenzonitrile, other downstream synthetic routes, hurry up and to see.

Related Products of 1897-52-5, 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. 1897-52-5, name is 2,6-Difluorobenzonitrile belongs to nitriles-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

Step 1: Preparation of 2,6-difluorobenzenecarboximidamide: To a solution of 2,6-difluorobenzonitrile (20 g) in diethyl ether (200 mL) was added lithium bis(trimethylsilyl)amide (240 mL, 1M in THF) at 0 C. The reaction mixture was stirred overnight at room temperature. After that, methyl tert-butyl ether (150 mL) was added and the reaction was stirred for 10 min. The reaction mixture was diluted with water (50 mL) and extracted with ethyl acetate (2×50 mL). The aqueous layer was basified (pH: 12-14) and extracted with ethyl acetate (2×50 mL). The combined organic layer was dried over sodium sulphate and concentrated under reduced pressure to afford the title compound (16 g) as a white solid. ‘H-NMR (400.0 MHz, de-DMSO): delta = 7.46-7.38 (m, 1H), 7.13-7.08 (m, 2H), 6.51 (s large, 3H).

The synthetic route of 2,6-Difluorobenzonitrile has been constantly updated, and we look forward to future research findings.

Reference:
Patent; BAYER CROPSCIENCE AKTIENGESELLSCHAFT; SCHWARZ, Hans-Georg; DECOR, Anne; GREUL, Joerg; TRAUTWEIN, Axel; HEILMANN, Eike Kevin; FISCHER, Reiner; LOeSEL, Peter; MALSAM, Olga; PORTZ, Daniela; ILG, Kerstin; SOMMER, Herbert; EILMUS, Sascha; SCHARWEY, Melanie; LISHCHYNSKYI, Anton; GEIBEL, Sven; GOeRGENS, Ulrich; HERBERT, Simon; TURBERG, Andreas; (124 pag.)WO2017/5717; (2017); A1;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 1897-52-5, Name is 2,6-Difluorobenzonitrile, molecular formula is C7H3F2N. In an article, author is Yin, Tao,once mentioned of 1897-52-5, Recommanded Product: 1897-52-5.

Powdered nitrile rubber @ silicon dioxide capsule as the wear modifier of phenolic resin composites under dry friction

Powdered nitrile rubber@ silicon dioxide (PNBR@SiO2) capsules were successfully prepared based on the sol-gel method and introduced into phenolic resin composites (PRC) as wear modifiers. Results showed that PNBR@SiO2 capsule modified PRC had slightly lower friction coefficient under diverse braking pressures and their wear rate at the braking pressure of 0.50 MPa was reduced by 97.3% than that of unmodified PRC owing to their excellent heat resistance, thus reducing adhesive wear. In contrast to PNBR modified PRC, the recession temperature on the friction coefficient of PNBR@SiO2 capsule modified PRC increased from 250 degrees C to 300 degrees C and the wear rate at 350 degrees C decreased by 21.6%, which was attributed to the reduction of abrasive wear and fatigue wear.

Interested yet? Keep reading other articles of 1897-52-5, you can contact me at any time and look forward to more communication. Recommanded Product: 1897-52-5.

Related Products of 1897-52-5, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 1897-52-5, Name is 2,6-Difluorobenzonitrile, SMILES is N#CC1=C(F)C=CC=C1F, belongs to nitriles-buliding-blocks compound. In a article, author is Miura, Tomoya, introduce new discover of the category.

Regioselective 1,3-Dipolar Cycloaddition of Nitriles with Nitrile Imines Generated from Tetrazoles

A synthesis of 3,5-disubstituted-1,2,4-triazoles from nitriles and 5-aryltetrazoles is reported. When 5-aryltetrazoles are triflylated in the presence of nitriles, the resulting 5-aryl-2-triflyltetrazoles thermally generate N-triflyl-nitrile imines through a sequence of ring-chain tautomerization and denitrogenation. The N-triflyl-nitrile imines immediately undergo 1,3dipolar cycloaddition with nitriles in a regioselective manner, forming the corresponding 1,2,4-triazoles.

Related Products of 1897-52-5, 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 1897-52-5.

Synthetic Route of 1897-52-5, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 1897-52-5, Name is 2,6-Difluorobenzonitrile, SMILES is N#CC1=C(F)C=CC=C1F, belongs to nitriles-buliding-blocks compound. In a article, author is Wei, Lihong, introduce new discover of the category.

Effect of sodium on three-phase nitrogen transformation during coal pyrolysis: A qualitative and semi-quantitative investigation

Alkali metals have a significant effect on the transformation of three-phase nitrogen during coal pyrolysis, but there is a lack of understanding about this mechanism of action. In this work, the effects of inorganic sodium (NaCl) and organic sodium (CH3COONa) on the mutual transformation of three-phase nitrogen in coal pyrolysis were studied by TGA-MS/FTIR, XPS and Py-GC/MS. Results shown that more nitrogen remained in char, the conversion of heterocyclic nitrogen in coal to tar-N was inhibited with most of CH3COONa and lower addition NaCl, including the transformations of N-5 to pyrrole-N and amine-N, and the transformations of N-6 to pyridine N and nitrile-N. While higher NaCl addition promotes the transformations of char-N to volatile-N. Sodium decreases the yield of tar, especially amine-N and nitrile-N through promoting the transformation of nitrile-N and pyridine-N in tar to HCN and the transformation of amine-N and pyrrole-N in tar to NH3. Both of promotion of NaCl on HCN release and inhibition on tar-N yield are stronger than CH3COONa. The HCN release of NaCl-added samples is higher 2.69%-4.29% than CH3COONa-added samples, while the content of char-N in NaCl-added samples is lower 2.6%-18.6% than CH3COONa-added samples.

Synthetic Route of 1897-52-5, 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 1897-52-5.

Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 1897-52-5, Name is 2,6-Difluorobenzonitrile, molecular formula is , belongs to nitriles-buliding-blocks compound. In a document, author is Gomes, Carolina B., HPLC of Formula: C7H3F2N.

Organocatalysis in the Synthesis of 1,2,3-Triazoyl-zidovudine Derivatives: Synthesis and Preliminary Antioxidant Activity

We describe herein the organocatalyzed synthesis and preliminary results of antioxidant activities of a range of 1,2,3-triazoyl-zidovudine derivatives. These hybrid compounds were synthesized in moderate to excellent yields by reacting zidovudine1with a variety of functionalized keto compounds2, such as beta-keto-esters, beta-diketones, beta-keto-amides, alpha-keto-nitriles, and beta-keto-sulfones, in the presence of a catalytic amount of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) (10 mol %). Furthermore, the synthesized compounds were screened for their in vitro antioxidant activity. Compounds3 a,3 d,3 g, and3 linhibited the formation of reactive oxygen species (ROS) and lipid peroxidation in the prefrontal cortex and hippocampus of mice with similar potency and efficacy.

If you are hungry for even more, make sure to check my other article about 1897-52-5, HPLC of Formula: C7H3F2N.

Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, Quality Control of 2,6-Difluorobenzonitrile1897-52-5, Name is 2,6-Difluorobenzonitrile, SMILES is N#CC1=C(F)C=CC=C1F, belongs to nitriles-buliding-blocks compound. In a article, author is Murugesh, Nithya, introduce new discover of the category.

A Convenient Synthesis of Iguratimod-Amine Precursor via NHC-Catalyzed Aldehyde-Nitrile Cross Coupling Reaction

A protocol for the synthesis of iguratimod-amine precursor has been developed using N-heterocyclic carbene (NHC)-catalyzed aldehyde-nitrile cross coupling reaction with overall atom efficiency of 71 %. The first step involves a nucleophilic aromatic substitution (SNAr) of 1-chloro-4-methoxy-2-nitrobenzene (1) with phenol to produce 4-methoxy-2-nitro-1-phenoxybenzene (2) which further undergoes nitro reduction followed by mesylation to produce N-(5-methoxy-2-phenoxyphenyl)methanesulfonamide (4). Furthermore, it was subjected to Vilsmeier-Haack formylation and demethylation (using BBr3) to produce N-(4-formyl-5-hydroxy-2-phenoxyphenyl)methanesulfonamide (6). Subsequently, O-alkylation followed by NHC-catalyzed aldehyde-nitrile cross coupling yields the amine precursor of iguratimod (8).

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions. you can also check out more blogs about 1897-52-5. Quality Control of 2,6-Difluorobenzonitrile.

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, 1897-52-5, Name is 2,6-Difluorobenzonitrile, SMILES is N#CC1=C(F)C=CC=C1F, in an article , author is Fang, Shiwen, once mentioned of 1897-52-5, COA of Formula: C7H3F2N.

Investigation of the nitrogen migration characteristics in sewage sludge during chemical looping gasification

Increasing attention has been given to the control of nitrogen pollutants during the process of using sewage sludge. In this paper, the gasification characteristics and the law of nitrogen migration in the process of chemical looping gasification (CLG) of sewage sludge were explored. Copper slag calcined at 1100 degrees C (1100CS), FeAl (Fe2O3+Al2O3), NiFeAl (NiFe2O4+Al2O3), and NiAl (NiO + Al2O3) were used as oxygen carrier. The addition of an oxygen carrier could increase the carbon conversion rate and decrease the low heating value. NOx precursors (HCN and NH3) were the main nitrogen-containing gas pollutants (similar to 40%). The sum yield of char nitrogen and tar nitrogen was only similar to 10%. Nitrile nitrogen, heterocyclic nitrogen and amide nitrogen were the main nitrogenous compounds in tar nitrogen. Increasing the oxidative activity of the oxygen carrier could significantly promote the oxidative transformation of N-2 from the NOx precursors, tar nitrogen, char nitrogen. Additionally, the migration of fuel nitrogen includes synchronous autothermal pyrolysis (stage I) and oxidative pyrolysis of the three-phase product under the action of [O] (stage II). Finally, this research realizes the energy utilization of sludge and reduces the release of nitrogen pollutants. (C) 2020 Elsevier Ltd. All rights reserved.

Interested yet? Read on for other articles about 1897-52-5, you can contact me at any time and look forward to more communication. COA of Formula: C7H3F2N.

Reference of 1897-52-5, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 1897-52-5, Name is 2,6-Difluorobenzonitrile, SMILES is N#CC1=C(F)C=CC=C1F, belongs to nitriles-buliding-blocks compound. In a article, author is Bhoite, Shubhangi P., introduce new discover of the category.

Radical Rearrangement of Aryl/Alkylidene Malononitriles via Aza Michael Addition/Decynoformylation/Addition Sequence: An Access to alpha-Aminonitriles and alpha-Aminoamides

An efficient, safe, and environmentally friendly tertiary butyl hydrogen peroxide (TBHP)-mediated rearrangement of aryl/alkylidene malononitrile with anilines has been developed with in situ generation of HCN as the cyanide source for the synthesis of substituted alpha-aminonitriles and alpha-aminoamide. A diverse set of alpha-aminonitriles and alpha-aminoamides was efficiently synthesized in good to excellent yields. This method features a broad substrate scope and good functional group tolerance, and the in situ-generated HCN bypasses the use of an external cyanide source.

Reference of 1897-52-5, 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 1897-52-5.