Pyridine-derivatives

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. 145100-50-1, name is 1,1,1-Trifluoro-N-(pyridin-2-yl)-N-((trifluoromethyl)sulfonyl)methanesulfonamide, the common compound, a new synthetic route is introduced below. Recommanded Product: 1,1,1-Trifluoro-N-(pyridin-2-yl)-N-((trifluoromethyl)sulfonyl)methanesulfonamide

EXAMPLE 14B 1-tert-butyl-3-methyl 4-{[(trifluoromethyl)sulfonyl]oxy}-5,6-dihydropyridine-1,3(2H)-dicarboxylate A solution of Example 14A (958 mg, 3.73 mmol) in dichloromethane (10 mL) at 0 C. was treated with diisopropylethylamine (2 mL) and 2-[N,N-bis(trifluoromethylsulfonyl)amino]pyridine (2.67 g, 7.46 mmol), warmed to room tempeature overnight, treated with additional diisopropylethylamine (2 mL) and 2-[N,N-bis(trifluoromethylsulfonyl)amino]pyridine (2.67 g, 7.46 mmol), stirred for 5 days, and partitioned between ethyl acetate and saturated sodium bicarbonate. The organic layer was washed with brine, dried (MgSO4), filtered, and concentrated. The concentrate was purified by flash column chromatography on silica gel with 5 to 10% ethyl acetate/hexanes to provide the desired product (1.02 g, 70%). MS (DCI/NH3) m/e 407 (M+NH4)+; 1H NMR (300 MHz, CDCl3) delta4.27 (m, 2H), 3.84 (s, 3H), 3.63 (t, J=5.8 Hz, 2H), 2.52 (m, 2H), 1.48 (s, 9H).

The synthetic route of 145100-50-1 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Gwaltney II, Stephen L.; Nelson, Lissa T.J.; O’Connor, Stephen J.; Sham, Hing L.; Sullivan, Gerard M.; Wang, Weibo; US2003/216441; (2003); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Reference of 102830-75-1, 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. 102830-75-1, name is 3-Bromo-5-chloro-2-methoxypyridine. A new synthetic method of this compound is introduced below.

To a solution of 3-bromo-5-chloro-2-methoxypyridine (5.00 g, 33.7 mmol) in toluene (100 mL) was added tert-butyl 3-aminoazetidine-1-carboxylate (5.8 g, 18.5 mmol), Xantphos (650 mg, 1.12 mmol), Cs2CO3 (14.6 g, 44.9 mmol) and Pd2(dba)3 (514 mg, 0.562 mmol). The reaction mixture was stirred at 60 C. under nitrogen for 4 days. After cooling to RT, the reaction mixture was filtered, washed with ethyl acetate (100 mL), the organic layer washed with water (60 mL), brine (60 mL), dried over Na2SO4, filtered, and concentrated in vacuo. The residue was purified by flash chromatography (ethyl acetate/hexane) to obtain 5.6 g of tert-butyl 3-((5-chloro-2-methoxypyridin-3-yl)amino)azetidine-1-carboxylate as a white-yellow oil (80%): 1H NMR (400 MHz, CDCl3) delta 7.39 (d, J=2.2 Hz, 1H), 6.36 (d, J=2.2 Hz, 1H), 4.52 (d, J=6.5 Hz, 1H), 4.24 (dd, J=8.9, 7.1 Hz, 2H), 4.05 (m, 1H), 3.89 (s, 3H), 3.70 (dd, J=9.1, 4.8 Hz, 2H), 1.37 (s, 9H); MS (ES) m/z 314 (M+H).

At the same time, in my other blogs, there are other synthetic methods of this type of compound,102830-75-1, 3-Bromo-5-chloro-2-methoxypyridine, and friends who are interested can also refer to it.

Reference:
Patent; Confluence Life Sciences, Inc.; Jacobsen, Eric Jon; Blinn, James Robert; US9145393; (2015); B2;,
Pyridine – Wikipedia,
Pyridine | C5H5N – 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. 65169-43-9, name is Methyl 2-chloro-5-methylnicotinate. This compound has unique chemical properties. The synthetic route is as follows. Recommanded Product: 65169-43-9

j0352] To a sealed tube containing methyl 2-chloro-5-me- thylnicotinate (CAS 65 169-43-9) (745 g, 4.01 mmol), Cul (38 mg, 0.2 mmol), LiC1 (169 g, 4.01 mmol), and Pd(PPh3)4 (231 g, 0.2 mmol) in toluene (15 mE) was added 2-(tributyl- stannyl)pyrimidine (1.5 mE, 4.4 mmol), and the reaction mixture was heated at 120 C. overnight. The reaction mixture was diluted with water and extracted with DCM. The combined organic layers were dried over Mg504, filtered and evaporated. Purification via silica gel chromatography (0-50% EtOAc in hexanes) gave the title compound (494 g, 52%). MS (ESI) mass calcd. for C,2H,,N302, 229.1; mlz found 229.99.

If you are interested in these compounds, you can also browse my other articles.Thank you for taking the time to read this article. I hope you enjoyed it, 65169-43-9, Methyl 2-chloro-5-methylnicotinate.

Reference:
Patent; Janssen Pharmaceutica NV; COATE, Heather R.; DVORAK, Curt A.; FITZGERALD, Anne E.; LEBOLD, Terry P.; PREVILLE, Cathy; SHIREMAN, Brock T.; (473 pag.)US2016/46640; (2016); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Adding a certain compound to certain chemical reactions, such as: 81719-53-1, 3,5-Dichloropyridine-2-carboxylic Acid, 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, name: 3,5-Dichloropyridine-2-carboxylic Acid, blongs to pyridine-derivatives compound. name: 3,5-Dichloropyridine-2-carboxylic Acid

Production Example 32 (1) [0773] 5.53 ml of thionyl chloride was added to a mixture of 4.7 g of 3,5-dichloropicolinic acid, 49 ml of toluene and 0.1 ml of DMF, and the mixture was stirred at 80C for 2 hours. The cooled reaction mixture was concentrated under reduced pressure, and 49 ml of toluene, 4.84 g of N-methyl-4-trifluoromethylsulfanylaniline and 8.05 ml of diisopropylethylamine were added, and the mixture was stirred at 80C for 2 hours. The cooled reaction mixture was poured to a saturated aqueous sodium bicarbonate solution, and the mixture was extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate and then concentrated under reduced pressure, and the resulting residue was applied to a silica gel column chromatography to obtain 8.92 g of 3,5-dichloro-N-methyl-N-(4-trifluoromethylsulfanylphenyl)pi colinamide. RRN 1573,5-Dichloro-N-methyl-N-(4-trifluoromethylsulfanylphenyl)pi colinamide [0774] 1H-NMR(CDCl3)delta: 8.28(1H, d), 7.58(1H, d), 7.50(2H, d), 7.19(2H, d), 3.54(3H, s).

The synthetic route of 81719-53-1 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Sumitomo Chemical Company, Limited; MAEHATA, Ryota; MIZUNO, Hajime; SHIMIZU, Chie; NOKURA, Yoshihiko; EP2881386; (2015); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Reference of 1101120-05-1, 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 1101120-05-1 as follows.

General procedure: These were made using NaHCO3 or 2,6-lutidine as detailed below, unless otherwise stated. Methylhydrazine sulfate (1.2 equiv) and NaHCO3 (5 equiv) were added to a solution of 3-formylpyrazolo[1,5-a]pyridine-5-carbonitrile (2) (1 equiv) in MeOH (5 mL). After all of the aldehyde was consumed, sulfonyl chloride or acyl chloride (1.3 equiv) was added and the reaction mixture stirred for a further 30 min. The solvent was removed in vacuo and the residue taken up in CH2Cl2 and water. The layers were separated and the aqueous phase extracted with CH2Cl2, then the combined organic layers were dried (Na2SO4) and the solvent removed in vacuo. Chromatography or trituration then afforded the hydrazides. Alternatively, methylhydrazine sulfate (1.2 equiv) and 2,6-lutidine (5 equiv) were added to a solution of 2 (1 equiv) in MeOH (5 mL). After all of the aldehyde was consumed, sulfonyl chloride or acyl chloride (1.3 equiv) was added and the reaction mixture stirred for a further 30 min. The hydrazide was then filtered off, washed with MeOH and dried.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,1101120-05-1, its application will become more common.

Reference:
Article; Kendall, Jackie D.; Giddens, Anna C.; Tsang, Kit Yee; Frederick, Raphael; Marshall, Elaine S.; Singh, Ripudaman; Lill, Claire L.; Lee, Woo-Jeong; Kolekar, Sharada; Chao, Mindy; Malik, Alisha; Yu, Shuqiao; Chaussade, Claire; Buchanan, Christina; Rewcastle, Gordon W.; Baguley, Bruce C.; Flanagan, Jack U.; Jamieson, Stephen M.F.; Denny, William A.; Shepherd, Peter R.; Bioorganic and Medicinal Chemistry; vol. 20; 1; (2012); p. 58 – 68;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Application of 1121-60-4, With the rapid development and complex challenges of chemical substances, the synthesis of new drugs is usually one of the most effective ways to increase yield.1121-60-4, name is Picolinaldehyde, molecular formula is C6H5NO, molecular weight is 107.11, as common compound, the synthetic route is as follows.

General procedure: Equimolar mixture of pyridine carboxaldehyde deriva-tives (1 mmol) and sodium metabisulphite (1 mmol) in DMF (10 mL) was stirred for 10 to 15 min, followed by the addi-tion of o-phenylene diamine/2-aminothiophenol (1 mmol) into it and refluxed for 3 h. The progress of the reaction was monitored by TLC. After completion, the reaction mixture was poured into crushed ice, precipitates were formed which were collected by filtration to afford compounds 1-27 in good yields. Recrystallization from methanol yielded pure crystals.

The chemical industry reduces the impact on the environment during synthesis 1121-60-4, I believe this compound will play a more active role in future production and life.

Reference:
Article; Khan, Momin; Ahmad, Riaz; Rehman, Gauhar; Gul, Naeem; Shah, Sana; Salar, Uzma; Perveen, Shahnaz; Khan, Khalid Mohammed; Letters in drug design and discovery; vol. 16; 9; (2019); p. 984 – 993;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Adding a certain compound to certain chemical reactions, such as: 2176-62-7, Perchloropyridine, 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, name: Perchloropyridine, blongs to pyridine-derivatives compound. name: Perchloropyridine

In a 1000 mL three-necked flask, add 600 mL of DMI and anhydrous KF146.72 g with a purity of 99% and a particle size of 20-50 um. Stirring and distilling under reduced pressure (130-135 C / 60 mmHg)60 g solvent with water evaporation, the measured water content of less than 1000 ppm, heated to 90 C, adding purity of 97% of the five chloropyridine 129.40 g, After 1.5 h of incubation, heating was stopped, the reaction mixture was cooled and the reaction mixture was filtered to obtain filtrate and residue. The residue was washed with 100 mL of DMI and suction filtered to obtain a washing solution. Combined washing liquid and filtrate, distillation, collecting 65 ~ 70 , 5 KPa fractions, namely 3,5-dichloro-2,4,6-trifluoropyridine

At the same time, in my other blogs, there are other synthetic methods of this type of compound,2176-62-7, Perchloropyridine, and friends who are interested can also refer to it.

Reference:
Patent; Sichuan Fusida Biotechnology Development Co., Ltd; Luo, Qian; Peng, Zhou; Li, Zhou; Wang, Lei; Zhang, Hua; Pi, Yawei; (8 pag.)CN106008331; (2016); A;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Related Products of 189089-90-5, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 189089-90-5, name is 1-Benzenesulfonyl-1H-pyrrolo[2,3-b]pyridine-2-carboxylic acid, molecular formula is C14H10N2O4S, The compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.

General procedure: A mixture of substituted pyridine N-oxide 1 (1 eq),heteroaryl carboxylic acid 2 (2 eq), Pd(OAc)2 (10 mol %), pyridine (3 eq) and Ag2O (2.5 eq) in DMF: CH3CN (1:2, 6 mL) was stirredat 110 C for 12 h. The reaction mixture was filtered through celite pad, washed with ethyl acetate. The organic layer was washed withwater and brine, dried over sodium sulfate, and concentrated in vacuum. Crude product was purified by either CombiFlash Rf orGrace Instrument using Teledyne Isco RediSep Rf columns (Normal-phase-12 g) 2-4% methanol in dichloromethane mixture as thesolvent to get 3.

According to the analysis of related databases, 189089-90-5, the application of this compound in the production field has become more and more popular.

Reference:
Article; Suresh, Rajendran; Muthusubramanian, Shanmugam; Senthilkumaran, Rajendran; Synlett; vol. 25; 14; (2014); p. 2064 – 2066;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 100-48-1, name is Isonicotinonitrile, molecular formula is C6H4N2, The compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below. Safety of Isonicotinonitrile

(d) 4-Pyridinecarboxamidine hydrochloride A solution of 4-pyridinecarbonitrile (370 g, 3.55 mol) and sodium methoxide (20.0 g, 0.37 mol) in methanol (1.71) was stirred at room temperature for 1.5 hours, then ammonium chloride (200 g, 3.7 mol) was added. The reaction mixture was stirred for 24 hours, the resulting solid was collected by filtration and the filtrate was evaporated to dryness. The two crops were combined and recrystallized from water to afford 394 g (70percent) of 4-pyridinecarboxamidine hydrochloride, m.p. 250°-252° C. (dec.).

With the rapid development of chemical substances, we look forward to future research findings about 100-48-1.

Reference:
Patent; Sterling Winthrop Inc.; US5294612; (1994); A;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

With the rapid development and complex challenges of chemical substances, the synthesis of new drugs is usually one of the most effective ways to increase yield.147149-98-2, name is 4-Amino-2-(trifluoromethyl)pyridine, molecular formula is C6H5F3N2, molecular weight is 162.11, as common compound, the synthetic route is as follows.SDS of cas: 147149-98-2

To a solution of 2,4-dichloro-6-(4- (trifluoromethyl)pyrimidin-2-yl)-l,3,5-triazine (981 mg, 3.31 mmol) in THF (80 mL) was added 2-(trifluoromethyl)pyridin-4-amine (590 mg, 3.64 mmol) and NaHC03 (556 mg, 6.6 mmol). The mixture was stirred at refluxing for 18 hours. The mixture was concentrated and poured to water, extracted with ethyl acetate, dried over sodium sulphate, filtered and concentrated to give a residue, which was purified by Si02 chromatography to give 4-chloro-6-(4-trifluoromethyl- pyrimidin-2-yl)-[l,3,5]triazin-2-yl]-(2-trifluoromethyl-pyridin-4-yl)-amine. LCMS: m/z 422.2 (M+H)+

At the same time, in my other blogs, there are other synthetic methods of this type of compound,147149-98-2, 4-Amino-2-(trifluoromethyl)pyridine, and friends who are interested can also refer to it.

Reference:
Patent; AGIOS PHARMACEUTICALS, INC.; TRAVINS, Jeremy; UTLEY, Luke; WO2015/6592; (2015); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem