Pyridine-derivatives

Reference of 72093-07-3, 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.72093-07-3, name is 5-Chloro-2-methylpyridine, molecular formula is C6H6ClN, molecular weight is 127.57, as common compound, the synthetic route is as follows.

To a solution of 5-chloro-2-methylpyridine (Step A, 1.1 g, 8.7 mmol) in 15 mL anhydrous ether was added phenyl lithium (1.8 M in cyclohexane/ether, 7.2 mL, 13 mmol) at 0C, and the reaction was stirred at room temperature for 30 min. The resulting mixture was cooled back to 0C, and was added (LR, 2R)-1-phenylpropylene oxide (2.3 g, 17 mmol), and the reaction was allowed to warm to room temperature overnight. The reaction mixture was partitioned between EtOAc (100 mL) and water (100 mL). The organic layer was separated and the aqueous layer extracted with EtOAc (2 x 100 mL). The combined organic extracts were dried over anhydrous MGS04, filtered, and concentrated to dryness, and the residue was purified by flash column chromatography on silica gel eluted with 10 to 40% EtOAc in hexane to afford the title compound. 1H NMR (500 MHz, CD30D) : 8 8.28 (d, 1H), 7.59 (dd, 1H), 7.25-7. 12 (m, 5H), 7.05 (d, 1H), 4.03 (m, 1H), 3.29 (dd, 1H), 3.19 (dd, 1H), 3.12 (m, 1H), 1.12 (d, 3H).

Statistics shows that 72093-07-3 is playing an increasingly important role. we look forward to future research findings about 5-Chloro-2-methylpyridine.

Reference:
Patent; MERCK & CO., INC.; WO2004/48317; (2004); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – 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. 75308-46-2, name is tert-Butyl 2,6-dichloroisonicotinate. A new synthetic method of this compound is introduced below., Quality Control of tert-Butyl 2,6-dichloroisonicotinate

To a solution of 2,6-dichloro-isonicotinic acid tert.-butyl ester (780 mg, 3.14 mmol), and 2,4,6-trivinylcyclotriboroxane pyridine complex (640 mg, 2.66 mmol, prepared according to F. Kerins, D. F. O’Shea J. Org. Chem. 67 (2002) 4968-4971) in DME (12 mL), a solution of 2 M aq. K2CO3 (3 mL) followed by Pd(PPh3)4 (30 mg, 0.041 mmol) and PPh3 (50 mg, 0.187 mmol) is added. The mixture is stirred at 100 C. for 15 h before it is cooled to rt, diluted with ether and washed with 1 N aq. NaOH solution (3×30 mL). The aq. phase is extracted once more with ether and the combined org. extracts are dried over Na2SO4, filtered and evaporated. The crude product is purified by CC on silica gel eluting with heptane:EA 5:1 to give 2,6-divinyl-isonicotinic acid tert-butyl ester (703 mg) as a colourless oil; LC-MS: tR=1.03 min, [M+1]+=232.01.

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, 75308-46-2, tert-Butyl 2,6-dichloroisonicotinate.

Reference:
Patent; Actelion Pharmaceuticals Ltd.; US2010/63108; (2010); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Reference of 72990-37-5, 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. 72990-37-5, name is 3-Chloroisonicotinaldehyde. A new synthetic method of this compound is introduced below.

General procedure: A solution of commercially available quinoline derivatives (1equiv.), p-toluenesulfonamide (1equiv.) and aldehyde (1equiv.) in toluene (1 M) was refluxed at 120C for 12h in a reaction tube under N2. After the mixture was cooled to room temperature, the solvent was removed under reduced pressure. Then the residue was purified by silica gel column chromatography to afford the vinyl quinoline derivatives.

At the same time, in my other blogs, there are other synthetic methods of this type of compound,72990-37-5, 3-Chloroisonicotinaldehyde, and friends who are interested can also refer to it.

Reference:
Article; Yue, Xuyi; Dhavale, Dhruva D.; Li, Junfeng; Luo, Zonghua; Liu, Jialu; Yang, Hao; Mach, Robert H.; Kotzbauer, Paul T.; Tu, Zhude; Bioorganic and Medicinal Chemistry Letters; vol. 28; 6; (2018); p. 1011 – 1019;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Related Products of 14294-11-2, 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.14294-11-2, name is 1-(Pyridin-2-yl)thiourea, molecular formula is C6H7N3S, molecular weight is 153.21, as common compound, the synthetic route is as follows.

General procedure: Arylthiourea 2 (1 mmol) was added to a solution (in case of 1a) or suspension (for 1b,c) of 3-substituted 1,2,4-triazine 1 (1 mmol) in acetic anhydride. The reaction mixture was stirred at room temperature for 7-27 h. The precipitate obtained was filtered and washed with a small amount of acetic anhydride, diethyl ether and dried in air. For the analytical data, see Online Supplementary Materials.

The chemical industry reduces the impact on the environment during synthesis 14294-11-2, I believe this compound will play a more active role in future production and life.

Reference:
Article; Mochulskaya, Nataliya N.; Slepukhin, Pavel A.; Charushin, Valery N.; Kodess, Mikhail I.; Mendeleev Communications; vol. 26; 5; (2016); p. 375 – 377;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Reference of 669066-91-5 ,Some common heterocyclic compound, 669066-91-5, molecular formula is C6H3BrFNO2, 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.

A solution of 5-bromo-3-fluoropyridine-2-carboxylic acid (2.7 g, 12.27 mmol, 1 equiv.) and H2S04 (5 mL) in MeOH (10 mL) was stirred at 85 C for 1 hour. The mixture was basified to pH 7 with saturated NaHCO3. The resulting mixture was extracted with EA (3x) and evaporated to afford the title compound (2.3 g) as off white solid. ESI-MS m/z= 233.90[M+Hjt

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. 669066-91-5, 5-Bromo-3-fluoropicolinic acid, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; ENANTA PHARMACEUTICALS, INC.; OR, Yat, Sun; BLAISDELL, Thomas, P.; SHOOK, Brian, C.; KIM, In, Jong; (98 pag.)WO2018/226801; (2018); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – 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. 106877-33-2, name is 5-Amino-2-(trifluoromethyl)pyridine. A new synthetic method of this compound is introduced below., Computed Properties of C6H5F3N2

EXAMPLE 824-(Aminomethyl)-l-(7H-pyrrolor2,3-dlpyrimidin-4-yl)-N-(6-(trifluoromethyl)pyridin-3- yl)piperidine-4-carboxamide82A. ferf-Butyl 4-cvano-4-(6-(trifluoromethyl)pyridin-3-ylcarbamoyl)piperidine- 1 – carboxylate; 6-(Trifluoromethyl)pyridin-3 -amine (319 mg, 1.97 mmol) was added in one portion to 1- (t°t-butoxycarbonyl)-4-cyanopiperidine-4-carboxylic acid (500mg, 1.97 mmol), HATU (822 mg, 2.16 mmol) and DIPEA (1030 mul, 5.90 mmol) in DMA (9832 mul) at 2O0C under nitrogen. The resulting solution was stirred at 20 0C for 24 hours. The reaction mixture was diluted with EtOAc (10ml), and washed sequentially with water (2 x 10ml) and saturated brine (10ml). The organic layer was dried over MgSO4, filtered and evaporated to afford crude product. The crude product was purified by flash silica chromatography, elution gradient 10 to 50% EtOAc in isohexane. Pure fractions were evaporated to dryness to afford tert-butyl 4-cyano-4-(6-(trifluoromethyl)pyridin-3-ylcarbamoyl)piperidine- 1 – carboxylate (330 mg, 42.1 %) as a white solid .IH NMR (400.132 MHz, DMSO) delta 1.42 (9H, s), 1.97 – 2.05 (2H, m), 2.22 (2H, d), 3.00 (2H, s), 4.07 (2H, d), 7.93 (IH, d), 8.34 – 8.36 (IH, m), 8.97 (IH, d), 10.72 (IH, s)MS m/e MH+ 397

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, 106877-33-2, 5-Amino-2-(trifluoromethyl)pyridine.

Reference:
Patent; ASTEX THERAPEUTICS LIMITED; THE INSTITUTE OF CANCER RESEARCH:ROYAL CANCER HOSPITAL; CANCER RESEARCH TECHNOLOGY LIMITED; ASTRAZENECA AB; WO2008/75110; (2008); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Synthetic Route of 68470-59-7 ,Some common heterocyclic compound, 68470-59-7, molecular formula is C7H8BrN, 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.

Sodium azide (48 mg, 073 mmo) was added to a soution of 2(bromomethy 6methypyridne (91 mg, 049 mmo) n dry DMFm). (t8 The reaction mixture was irradiated with microwaves 90 00 for 30 mn. After cooing, water was added and the reaction mixture was extracted with Et20. The organic phase was dried over Na2SO4 and the sovent removed to yied the desred product (33 mg, 46%). 1HNMR (300MHz, CDC3), 6 ppm: 758 (t, J = 8 Hz, IH), 7.13(d, J 8 Hz, 1H), 7.08 (d, J = 8Hz, 1H), 4,43 (s, 2H), 2.54 (s, 3H).

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. 68470-59-7, 2-(Bromomethyl)-6-methylpyridine, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; LABORATORIOS DEL DR. ESTEVE, S.A.; CUEVAS CORDOBES, Felix; ALMANSA-ROSALES, Carmen; GARCIA LOPEZ, Monica; WO2015/91939; (2015); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Adding a certain compound to certain chemical reactions, such as: 1159827-76-5, 7-Fluoroimidazo[1,2-a]pyridine-3-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, 1159827-76-5, blongs to pyridine-derivatives compound. Safety of 7-Fluoroimidazo[1,2-a]pyridine-3-carboxylic acid

7-Fluoroimidazo[l,2- a]pyridine-3-carboxylic acid (Preparation I; 224 mg, 1.25 mmol) was dissolved in anhydrous N-methylpyrrolidinone (0.2 M) and treated with triethylamine (0.35 mL, 2.5 mmol). When the mixture was homogeneous 2,4,6-trichlorobenzoyl chloride (0.20 mL, 1.31 mmol) was added dropwise. The mixture was stirred for 30 minutes at ambient temperature. 3-Ethyl-l- ((l-ethyl-lH-pyrazol-3-yl)methyl)-lH-indazol-4-amine (0.30 mg, 1.11 mmol) was added in one portion and the sides of the flask were washed with anhydrous N-methylpyrrolidinone (2 mL). The mixture was heated to 90 C and stirred for 16 hours. The mixture was allowed to cool and filtered through GF/F paper washing with ethyl acetate. The filtrate was concentration under reduced pressure and diluted with water to give a beige precipitate which was collected by filtration, washed with water and dried under high vacuum to give N-(3- ethyl- 1 -((1 -ethyl- lH-pyrazol-3-yl)methyl)- lH-indazol-4-yl)-7-fluoroimidazo[ 1 ,2-a]pyridine- 3-carboxamide (259 mg). MS m/z 432.1 (M+l, APCI+).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,1159827-76-5, its application will become more common.

Reference:
Patent; ARRAY BIOPHARMA INC.; BOYS, Mark Laurence; BRADLEY, Michael; DELISLE, Robert Kirk; HENNINGS, D. David; KENNEDY, April L.; MARMSATER, Fredrik P.; MEDINA, Matthew; MUNSON, Mark C.; RAST, Bryson; RIZZI, James P.; RODRIGUEZ, Martha E.; TOPALOV, George T.; ZHAO, Qian; WO2011/79076; (2011); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Reference of 112006-75-4, 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.112006-75-4, name is N,N-Dimethyl-2-sulfamoylnicotinamide, molecular formula is C8H11N3O3S, molecular weight is 229.26, as common compound, the synthetic route is as follows.

7) A mixture of 100 ml of water and 105 ml of acetone was added,Cooled to 0 C, 0.08 mol of potassium carbonate was added,Stir to make it fully dissolved;8) control the temperature within 5 ,0.12 mol of methyl chloroformate was added dropwise,In 30 minutes drop finished,At the bottom of the flask there is a white solid;

Statistics shows that 112006-75-4 is playing an increasingly important role. we look forward to future research findings about N,N-Dimethyl-2-sulfamoylnicotinamide.

Reference:
Patent; Jiangsu Changqing Biological Technology Co., Ltd.; Yu Guoquan; Sun Xialin; Ding Huaping; Zhou Peng; Yuan Yu; Lv Jiahang; (7 pag.)CN106749183; (2017); A;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

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. 54221-95-3, name is 2-Acetylaminoisonicotinic acid, the common compound, a new synthetic route is introduced below. Formula: C8H8N2O3

(C) Ethyl 2-aminoisonicotinate 2-(Acetylamino)isonicotinic acid (13 g, 73.60 mmol) synthesised by the method of Example 7, (A) was added with ethanol (50 ml) and toluene (150 ml) and heated to 100-110° C. The mixture was added dropwise with concentrated sulfuric acid (7 ml) and heated for 11 hour with stirring. The reaction solution was returned to room temperature and poured into saturated aqueous sodium hydrogencarbonate cooled with ice. The mixture was extracted with chloroform and the collected organic layer was dried over magnesium sulfate and concentrated under reduced pressure to obtain 7.6 g (23percent for the two steps) of the title compound as pale yellow crystals without purification. 1H-NMR (CDCl3) delta: 1.39 (3H, t, J=7.07 Hz), 4.37 (2H, qu, J=7.07 Hz), 4.63 (2H, brd), 7.07 (1H, s), 7.17 (1H, dd, J=0.98, 5.12 Hz), 8.18 (1H, d, J=5.12 Hz) EI/MS; m/z: 165 (M+-1)

The synthetic route of 54221-95-3 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; DAIICHI PHARMACEUTICAL CO., LTD; US2003/92720; (2003); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem