Category: 19847-12-2

Let’s face it, organic chemistry can seem difficult to learn. Especially from a beginner’s point of view. Like 19847-12-2, Name is Pyrazinecarbonitrile. In a document, author is Elkamhawy, Ahmed, introducing its new discovery. Category: Pyrazines.

Herein, two new series ofN-substituted indole-based analogues were rationally designed, synthesizedviamicrowave heating technology, and evaluated as noteworthy MAO-B potential inhibitors. Compared to the reported indazole-based hitsVIandVII, compounds4band4eexhibited higher inhibitory activities over MAO-B with IC(50)values of 1.65 and 0.78 mu M, respectively. When compared to the modest selectivity index of rasagiline (II, a well-known MAO-B inhibitor, SI > 50), both4band4ealso showed better selectivity indices (SI > 60 and 120, respectively). A further kinetic evaluation of the most potent derivative (4e) displayed a competitive mode of inhibition (inhibition constant (K-i)/MAO-B = 94.52 nM). Reasonable explanations of the elicited biological activities were presentedviaSAR study and molecular docking simulation. Accordingly, the remarkable MAO-B inhibitory activity of4e(N-(1-(3-fluorobenzoyl)-1H-indol-5-yl)pyrazine-2-carboxamide), with its selectivity and competitive inhibition, advocates its potential role as a promising lead worthy of further optimization.

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 19847-12-2 help many people in the next few years. Category: Pyrazines.

Reference:
Pyrazine – Wikipedia,
,Pyrazine | C4H4N2 – PubChem

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. 19847-12-2, name is Pyrazinecarbonitrile, This compound has unique chemical properties. The synthetic route is as follows., Application In Synthesis of Pyrazinecarbonitrile

2-Cyanopyrazine (1.0g, 9.5mmol) was dissolved in dry methanol (50mL) with stirring at room temperature. Metallic sodium (0.12g, 5.2mmol) was added and the mixture refluxed for 2h. The clear yellow solution of the in situ iminoester was brought to neutral pH with glacial acetic acid resulting in a clear orange solution. 2-(Hydoxyimino)-propanehydrazone [14,15] (1.1g, 9.3mmol) was added and the resulting solution refluxed for 1h, and stirred at room temperature overnight. The white solid formed was separated by suction filtration and washed with methanol and diethylether (Yield: 1.85g, 90%). 1H NMR (300MHz, DMSO-d6, 298K) delta (ppm) 11.72 (s, 1H, N-OH), 10.03 (s, 1H, NH), 9.27 (d, 1H, CH(pyz)), 8.70 (d, 1H, CH(pyz)), 8.64 (dd, 1H, CH(pyz)), 6.99 (s, 2H, NH2), 1.95 (s, 3H, CH3). 13C{1H} NMR (75.4MHz, DMSO-d6, 298K) delta (ppm) 160.52 (C=O), 150.66, 146.14 (C=N), 146.04 (C(pyz)), 145.01, 142.86, 142.72 (CH(pyz)), 10.20 (CH3). Selected IR data (cm-1): 3247 br (nu N-H), 1650 s (nu C=O), 1621 s, (nu C=N), 1045 s (nu N-Ooxime). M. pt. 240-242C.

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 19847-12-2.

Reference:
Article; Drover, Marcus W.; Tandon, Santokh S.; Anwar, Muhammad U.; Shuvaev, Konstantin V.; Dawe, Louise N.; Collins, Julie L.; Thompson, Laurence K.; Polyhedron; vol. 68; (2014); p. 94 – 102;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem

Electric Literature of 19847-12-2, 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. 19847-12-2, name is Pyrazinecarbonitrile belongs to pyrazines compound, it is a common compound, a new synthetic route is introduced below.

(1) preparing a format reagent,Add magnesium, anhydrous polarity to a nitrogen-protected pressure vesselSolvent tetrahydrofuran and elemental iodine, then add methyl chloride to the pressure vessel and stir.After the pressure vessel is heated to 60 C and stirring is continued for 2 hours, a format reagent is prepared;Metal magnesium is newly formed magnesium, and the molar ratio of magnesium metal to chloromethane acid is 1:1.1;The content of elemental iodine is 0.21% × metal magnesium weight; the reaction equation is as follows:(2)Addition reaction, adding 2-cyanopyrazine and tetrahydrofuran to the reactor and heating the reactor to50 C, then add catalysisThe cuprous chloride and the reagents of the above format are then refluxed and condensed.After the end, the remaining part of the reactor is an intermediate product, wherein the addition reaction time is 14h;The molar ratio of 2-cyanopyrazine to the format reagent S1 is1:1.05; the content of cuprous chloride is 2.1% metal magnesium weight;(3)Hydrolyzing, adding water to the remaining intermediate product of the above reactor,The pH of the solution in the reactor was adjusted to 1 with dilute sulfuric acid, and then stirred for 12 hours.Adjusting the pH of the solution in the reactor to neutral with a saturated aqueous solution of sodium carbonate;Finally extracted with toluene three times;(4)After the treatment, the toluene extract is desolvated, and the solid after desolvation is dissolved by heating with ethanol.Add activated carbon, continue heating and reflux for 10 min, and filter.The filtrate was cooled to 5 C to obtain a white solid P1; then the white solid P1 was recrystallized from ethanol.Produced a white solid P2,Drying gives 2-acetylpyrazine;The purity of 2-acetylpyrazine was 98.4%, and the yield of 2-acetylpyrazine was 69%.The reagent polar solvents, elemental iodine, 2-cyanopyrazine, tetrahydrofuran toluene and ethanol were all analytically pure.

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, Pyrazinecarbonitrile, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Henan Weiyuan Biological Technology Co., Ltd.; Xuan Bingwu; Xing Xiaodong; Xuan Fuxing; (8 pag.)CN109796416; (2019); A;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem

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. 19847-12-2, name is Pyrazinecarbonitrile, A new synthetic method of this compound is introduced below., SDS of cas: 19847-12-2

In a 250 mL round-bottomed flask, pyrazine-2-carbonitrile (10 g, 95.1 mmol), pyridine (2.26 g, 2.33 ml, 28.5 mmol), and 2-mercaptopropionic acid (10.1 g, 95.1 mmol) were combined to give a light yellow solution. The reaction mixture was heated to 100 C. and stirred for 2 h. Upon cooling, the thick yellow mixture was diluted with 100 mL ethanol and stirred for 30 min. The slurry was then filtered, and washed with diethyl ether (2*100 mL) to give 5-methyl-2-pyrazin-2-yl-thiazol-4-ol (17.86 g, 97.1%) as yellow solid which was used directly without further purification. Trifluoro-methanesulfonic acid 5-methyl-2-pyrazin-2-yl-thiazol-4-yl ester:

The synthetic route of 19847-12-2 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Alam, Muzaffar; Du Bois, Daisy Joe; Hawley, Ronald Charles; Kennedy-Smith, Joshua; Minatti, Ana Elena; Palmer, Wylie Solang; Silva, Tania; Wilhelm, Robert Stephen; US2011/71150; (2011); A1;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem

Electric Literature of 19847-12-2, 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. 19847-12-2, name is Pyrazinecarbonitrile belongs to pyrazines compound, it is a common compound, a new synthetic route is introduced below.

General procedure: To an oven dried rb flask with a magnetic stir bar were added 2-amiobenzamide 1a (136.0 mg, 1.0 mmol), nitrile derivative 2 (108.0 mg, 1.0 mmol), anhydrous zinc iodide (0.3 equiv, 96 mg) and the mixture were stirred in 5 mL acetonitrile for 1h at room temperature. Then iodine (51 mg, 0.2 mmol) and aq. TBHP (70% solution in water, 0.26 mL, 2.0 mmol) were added successively and the mixture stirred at rt for another 2 h. After completion of the reaction (TLC monitoring), the reaction mixture was quenched by aq. Na2S2O3 solution (5%, 20 mL), extracted with ethyl acetate (10 mL × 3), and the combined organic part was dried over anhydrous sodium sulphate. Removal of the solvent under reduced pressure left a crude mass which was purified by column chromatography using silica gel (25% EtOAc/hexane) to afford 3a (155 mg; 80% yield).

The synthetic route of Pyrazinecarbonitrile has been constantly updated, and we look forward to future research findings.

Reference:
Article; Saha, Moumita; Das, Asish R.; Tetrahedron Letters; vol. 59; 26; (2018); p. 2520 – 2525;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem

Reference of 19847-12-2, 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. 19847-12-2, name is Pyrazinecarbonitrile belongs to pyrazines compound, it is a common compound, a new synthetic route is introduced below.

Pyrazine-2-carbonitrile (19 g, 180 mmol) was dissolved in 1,4-dioxane (280 mL), and then Raney nickel (1.9 g) was added. The reaction mixture was reacted in hydrogen atmosphere at 60C for 48 hours. The mixture was filtered through Celite and the filtrate was concentrated under reduced pressure to obtain the title compound (1) (19 g, 98.9%) as a brown oil. 1H MR (400 MHz, DMSO-d6): delta 871 (s, 1H), 8.54-8.53 (m, 2H), 8.48 (d, J = 2.4Hz, 1H), 3.86 (s, 2H), 1.97 (br, 2H).

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, Pyrazinecarbonitrile, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; LIAO, Xibin; SUZHOU BAIJIBUGONG PHARMACEUTICAL TECHNOLOGY CO. LTD.; LI, Jia; LU, Zhijian; ZHOU, Yubo; GAO, Anhui; (100 pag.)WO2018/175512; (2018); A1;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem

Adding a certain compound to certain chemical reactions, such as: 19847-12-2, name is Pyrazinecarbonitrile, belongs to pyrazines 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 19847-12-2, category: Pyrazines

The synthesis of 5 was similar to that of 4, but with pzn(21.0 mg, 0.2 mmol) in place of pza. The resultant solution wasallowed to evaporate slowly in darkness at room temperature forseveral days to afford the product as block-shaped clear lightbrown crystals of 5. (Yield: 68%, based on silver). Anal. Calc. (found)for AgC11H8N3O3: C, 39.08 (38.97); H, 2.38 (2.42); N, 12.43(12.52)%. IR (KBr): m (cm1) = 3421 (s), 3294 (s), 3071 (s), 1657(s), 1549 (s), 1453 (m), 1403 (s), 1358 (s), 1256 (s), 1173 (m),1059 (m), 1021 (m), 804 (s), 740 (m), 671 (m), 625 (w), 562 (m),454 (m).

At the same time, in my other blogs, there are other synthetic methods of this type of compound, Pyrazinecarbonitrile, and friends who are interested can also refer to it.

Reference:
Article; Huang, Hua-Qi; Wang, Dan-Feng; Zhang, Ting; Huang, Rong-Bin; Journal of Molecular Structure; vol. 1086; (2015); p. 99 – 108;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem

Reference of 19847-12-2, These common heterocyclic compound, 19847-12-2, name is Pyrazinecarbonitrile, 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: Cu(II)-NaY (0.1 g) was added to a mixture of benzonitrile (0.206 g, 2.0 mmol) and sodium azide (0.169 g, 2.6 mmol) in DMF (5 mL) and mixture was stirred at 120 C for 3 h. After completion of reaction (as monitored by TLC), the catalyst was centrifuged, washed with ethyl acetate and the centrifugate was treated with ethyl acetate (30 mL) and 5 N HCl (20 mL) and stirred vigorously. The resultant organic layer was separated and the aqueous layer was again extracted with ethyl acetate (20 mL). The combined organic layers were washed with water and concentrated to give the crude solid crystalline 5-phenyltetrazole. The product was characterizedby 1H NMR , 13C NMR and mass spectroscopic analysis.

Statistics shows that Pyrazinecarbonitrile is playing an increasingly important role. we look forward to future research findings about 19847-12-2.

Reference:
Article; Sudhakar; Purna Chandra Rao; Prem Kumar; Suresh; Ravi; Asian Journal of Chemistry; vol. 29; 4; (2017); p. 864 – 866;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem

Related Products of 19847-12-2, 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. 19847-12-2, name is Pyrazinecarbonitrile belongs to pyrazines compound, it is a common compound, a new synthetic route is introduced below.

General procedure: The procedure for the synthesis of the tetrazole 2a is representative. A mixture of sodium azide (0.39 g 0.0060 mol), urea (0.36 g, 0.0060 mol) and water (2.5 mL) was taken in a round-bottom flask and stirred at 60 C for 1 h. Charged benzonitrile 1a (0.5 g 0.0048 mol), acetic acid(0.5 mL) and DMF (2.5mL) at 60 C and heat to 110C stirred for 8 h. After completion of the reaction (as indicated by TLC), the reaction mixture was cooled to room temperature and diluted the reaction mass with water (2.5 mL)and ethyl acetate (5.0 mL) at 25-35 C. Add 5N aqueous hydrochloric acid (2.5 mL) at 25-35 C. Stirred for 20- 30 min, the resultant organic layer was separated and the aqueous layer was extracted with ethyl acetate (2.5 mL). The combined organic layer was washed with 40 % aq.NaCl solution (2.5 mL) and dried over anhydrous Na2SO4 and concentrated to give a crude product, which was isolated using chilled water after 3-4 h maintenance, and eventually filtered off to give 0.67 g (95%) of an off-white solid.

The synthetic route of Pyrazinecarbonitrile has been constantly updated, and we look forward to future research findings.

Reference:
Article; Yakambram; Jaya Shree; Srinivasula Reddy; Satyanarayana; Naveen; Bandichhor, Rakeshwar; Tetrahedron Letters; vol. 59; 5; (2018); p. 445 – 449;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem

Synthetic Route of 19847-12-2, 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. 19847-12-2, name is Pyrazinecarbonitrile, This compound has unique chemical properties. The synthetic route is as follows.

Step 6 C-Pyrazin-2-yl-methylamine Pyrazine-2-carbonitrile 1g (10.5 g, 100 mmol) was dissolved in 150 mL of 1,4-dioxane, then Raney nickel (1.0 g) was added into a 250 mL autoclave. The reaction mixture was reacted in hydrogen atmosphere for 8 hours under 40 atmosphere at 60 C and filtered and concentrated under reduced pressure to obtain the title compound C-pyrazin-2-yl-methyl amine 1h (10.7 g, yield 98%) as a brown oil. MS m/z (ESI): 110 [M+1].

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

Reference:
Patent; Jiangsu Hengrui Medicine Co., Ltd.; Shanghai Hengrui Pharmaceutical Co. Ltd.; EP2404921; (2012); A1;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem