Category: pyridine-derivatives

Application of 945717-09-9, 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 945717-09-9 as follows.

To a solution of 22700mg, 0.306mmol) and 7(63.7mg, 0.6ilmmol) in 2OmL of Et3N was added Pd(PPh3)2C12 (10.73 rng, 0.Ol5mmoI) and CuT (5.82mg, 0.O3lmmol). The mixture was protected with N2 atmosphere, then was heated at 70C for 24 hours. TLC analysis showedcomplete conversion of starting material to a major product. The reaction mixture was then concentrated in vacua The crude product was purified by Prep-HPLC to give the target product Compound 100(19mg, yield: 18.46%).LCMS: m/z 337 (M+H)?1H NMR (400 MFIz, CDCI3): oe 8.40-8.39 (in, 1 El), 7.66 (s, IH), 7.59-7.56 (m, 11-1), 7.47 (s, 1 El),7.44-7.41 (m, 1H), 7.34-7.33 (in, 1H), 6.50 (s, 1H), 2.47 (s, 3H).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,945717-09-9, its application will become more common.

Reference:
Patent; HUA MEDICINE (SHANGHAI) LTD.; CHEN, Li; JIN, Xiaowei; (176 pag.)WO2017/117708; (2017); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Adding a certain compound to certain chemical reactions, such as: 106447-97-6, 2-Amino-4-(trifluoromethyl)pyridine, 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, category: pyridine-derivatives, blongs to pyridine-derivatives compound. category: pyridine-derivatives

Weighing N-bromo succinimide (1.12g, 6 . 3mmol) is added to thf (7.25 ml) in, cooling to 0 C, the 4 – (trifluoromethyl) pyridin-2-amine (0.97g, 6mmol) dissolved in tetrahydrofuran (5.75 ml) in, dropping slowly added to the above-mentioned solution, keeping the temperature at 0 C, after dripping, slowly to room temperature, stirring 0.5 hours, adding sodium thiosulfate (0.25g) aqueous solution (4.75 ml) quenching, concentrated, crude product by silica gel column chromatography (petroleum ether: ethyl acetate = 3:1) purification, to obtain the title compound (1.2g, yield 83.3%).

At the same time, in my other blogs, there are other synthetic methods of this type of compound,106447-97-6, 2-Amino-4-(trifluoromethyl)pyridine, and friends who are interested can also refer to it.

Reference:
Patent; Shandong Xuanzhu Oharma Co., Ltd.; Wu, Yongjian; (47 pag.)CN105541792; (2016); A;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Synthetic Route of 16013-85-7, Adding some certain compound to certain chemical reactions, such as: 16013-85-7, name is 2,6-Dichloro-3-nitropyridine,molecular formula is C5H2Cl2N2O2, 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 16013-85-7.

Method for svnthesising A.4m; 2,6-dichloro-3-nitro-pyridine (2.5 g, 12.9 mmol) is taken up in a solvent mixture of THF and NMP (5:1, 13 mL), combined with two spatula tips of silicon carbide and CuCN (2.3 g, 26.0 mmol) and heated to 1800C in the microwave reactor for 45 min. Then the solid obtained is suspended in H2O, extracted with ethyl acetate, washed with NaCl-sln., the organic phase is dried on MgSO4, the solvent is eliminated in vacuo and 6-chloro-3- nitro-pyridine-2-carbonitrile (HPLC-MS: tRet. = 1.01 min, MS(M+H)+ = 182, method LCMSBASl) is obtained.

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. 16013-85-7, 2,6-Dichloro-3-nitropyridine, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; ENGELHARDT, Harald; BOEHMELT, Guido; KOFINK, Christiane; KUHN, Daniel; MCCONNELL, Darryl; STADTMUELLER, Heinz; WO2010/7116; (2010); A2;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Electric Literature of 114077-82-6, 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. 114077-82-6, name is 4-Chloronicotinaldehyde, molecular formula is C6H4ClNO, 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.

Example 5 4-chloro-3-hydroxymethylpyridine To a solution of 4-chloro-3-pyridyl carboxyaldehyde (140 mg, 1.0 mmol) in THF (1 mL) at 0 C. was added methanol (1 mL) followed by portionwise addition of sodium borohydride (75 mg, 2.0 mmol). After 1 hr, acetic acid (0.15 ml) was added and the reaction mixture was evaporated to dryness with rotary evaporator at room temperature. The solid residue was chromatographed on silica gel column (1% MeOH/dichloromethane) to afford 60 mg (42%) of the title compound. 1H NMR (CDCl3) delta 4.30 (br s, 1H), 4.80 (s, 2H), 7.30 (d, 1H, J=5), 8.34 (d, 1H, J=5), 8.62 (s, 1H).

While traditionally a conservative industry, chemical producers will need to modernize their PR strategies to stay relevant.we look forward to future research findings about 114077-82-6, 4-Chloronicotinaldehyde.

Reference:
Patent; Microcide Pharmaceuticals, Inc.; US6066630; (2000); A;; ; Patent; Microcide Pharmaceuticals, Inc.; US6087355; (2000); A;; ; Patent; Microcide Pharmaceuticals, Inc.; US5859256; (1999); A;,
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. 65189-15-3, name is 5,6-Dichloronicotinonitrile, molecular formula is C6H2Cl2N2, 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. Quality Control of 5,6-Dichloronicotinonitrile

b) 5,6-Dichloro-pyridine-3-amidoxime The title compound was prepared from 5,6-dichloro-pyridine-3-carbonitrile (257 mg, 1.485 mmol) and 50 wt % hydroxylamine (96.0 muL, 1.57 mmol) similar to Example 36c, and yielded 234 mg (76%) of product as a light yellow solid. 1H NMR (DMSO-d6): 10.11 (s, 1H), 8.66 (d, J=2.20 Hz, 1H), 8.29 (d, J=1.93 Hz, 1H), 6.12 (s, 2H).

With the rapid development of chemical substances, we look forward to future research findings about 65189-15-3.

Reference:
Patent; Cai, Sui Xiong; Zhang, Han-Zhong; Drewe, John A.; Reddy, P. Sanjeeva; Kasibhatla, Shailaja; Kuemmerle, Jared Daniel; Ollis, Kristin P.; US2003/45546; (2003); A1;,
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. 944937-53-5, name is 6-Bromo-1H-pyrrolo[3,2-b]pyridine, molecular formula is C7H5BrN2, 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. name: 6-Bromo-1H-pyrrolo[3,2-b]pyridine

To an ice-cooled suspension of 6-bromo- 1H-pyffolo[3,2-b]pyridine (7.0 g, 35 mmol)in N,N-dimethylformamide (100 mL) was slowly added a solution of sodium hydride (2.12 g,88.28 mmol, 60% in mineral oil) in N,N-dimethylformamide (20 mL). After 30 mm at 0 C,a solution of 2-(1-chloroethyl)pyridine (5.0 g, 35 mmol) in N,N-dimethylformamide (20 mL)was slowly added. The mixture was then warmed to room temperature. After 16 h, saturatedaqueous ammonium chloride solution (20 mL) was slowly added to the reaction mixture, and the resulting solution was concentrated in vacuo. The resulting residue was purified by flash column chromatography (1 0-30% ethyl acetate in petroleum ether) to afford 6-bromo- 1 -(1 -(pyridin-2-yl)ethyl)- 1 H-pyrrolo [3,2-b] pyridine (6.0 g, 56% yield). 1 H NMR(400 MHz, Chloroform-d) oe: 8.61 (d, I = 4.4 Hz, 1 H), 8.47 (d, I = 2.0 Hz, 1 H), 7.70 (s, 1 H),7.62-7.57 (m, 2 H), 7.21 -7.18 (m, 1 H), 6.81-6.76 (m, 2 H), 5.66-5.61 (m, 1 H), 2.00 (d, I = 7.2 Hz, 3 H).

With the rapid development of chemical substances, we look forward to future research findings about 944937-53-5.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; GENENTECH, INC.; LYSSIKATOS, Joseph P.; LIU, Wen; SIU, Michael; ESTRADA, Anthony; PATEL, Snahel; LIANG, Guibai; HUESTIS, Malcolm; CHEN, Kevin; WO2015/91889; (2015); 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. 952-92-1, name is 1-Benzyl-1,4-dihydronicotinamide. A new synthetic method of this compound is introduced below., Computed Properties of C13H14N2O

General procedure: To the solution of HEH or BNAH (0.1 mmol) in ethanol or acetonitrile (2 mL) wasadded polysulfide 1 (0.2 mmol). The solution was incubated at r.t. or 37 C for 20 h(for HEH) or 5 h (for BNAH) under dark. After removing the solvent under reducedpressure, the yield of product 2 or 3 were determined by 1H-NMR.

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, 952-92-1, 1-Benzyl-1,4-dihydronicotinamide.

Reference:
Article; Peng, Bo; Liu, Chunrong; Li, Zhen; Day, Jacob J.; Lu, Yun; Lefer, David J.; Xian, Ming; Bioorganic and Medicinal Chemistry Letters; vol. 27; 3; (2017); p. 542 – 545;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Adding a certain compound to certain chemical reactions, such as: 56187-37-2, 2-(3,5-Dichloro-4-oxopyridin-1(4H)-yl)acetic 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, category: pyridine-derivatives, blongs to pyridine-derivatives compound. category: pyridine-derivatives

200ml of toluene and 2-iodophenylboronic acid (0.21mol) were added to a clean reaction flask, then compound IV210.93g (1.06mol) was added, and then compound III327.21g (0.95mol) was slowly added, and the reaction was refluxed for 5-6h, After the reaction, cooled to room temperature, transferred to purified water, separated the solid and filtered, washed with purified water, recrystallized with ethanol, and dried under vacuum to obtain 484.55 g of cefoxidone (I), with a molar yield of 93% and a purity of 99.9 %,Maximum single impurity 0.04%

The synthetic route of 56187-37-2 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Shandong Luoxin Pharmaceutical Group Hengxin Pharmaceutical Co., Ltd.; Shandong Luoxin Pharmaceutical Group Co., Ltd.; Shandong Yuxin Pharmaceutical Co., Ltd.; Liu Zhenteng; Liang Zhen; Liu Jiang; Liu Qingli; Zhang Jiwen; (6 pag.)CN110563750; (2019); A;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Related Products of 155377-05-2, The major producers of chemicals have been the Europe, Japan and China. Due to the growing call for a cleaner, greener environment, people will have to find innovative ways to maintain their relevance. Here is a compound 155377-05-2, name is Methyl 6-(trifluoromethyl)picolinate. This compound has unique chemical properties. The synthetic route is as follows.

The biuret (13 g, 126.3 mmol) was dissolved in 300 mL of ethylene glycol dimethyl ether.Sodium hydride (42 g, 1053 mmol) was added portionwise and stirred at 50 C for 1 h.Add 6-(trifluoromethyl)-picolinic acid methyl ester (21.6 g, 105.3 mmol),heatingThe reaction was carried out at 85 C for 16 h.The reaction solution was poured into water, the pH was adjusted with concentrated hydrochloric acid, filtered, and the filter cake was dried.The title compound was obtained.

According to the analysis of related databases, 155377-05-2, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Nanjing Shenghe Pharmaceutical Co., Ltd.; Zhao Liwen; Zhang Jin; Chen Cheng; Xu Chenglong; Wang Cheng; (19 pag.)CN110054616; (2019); A;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Reference of 66572-56-3, 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. 66572-56-3, name is 2-Bromoisonicotinic acid. A new synthetic method of this compound is introduced below.

HATU (45.17 g, 118.81 mmol) was added to a mixture of 2-bromopyridine-4- carboxylic acid (20 g, 99.01 mmol), DIPEA (69 mL, 396.03 mmol), and DMF (150 mL) at rt. The mixture was stirred for 45 min, and then 2-methylpropanamidine hydrochloride (14.57 g, 118.8 mmol) was added. The mixture was stirred for 3 h, poured into H20 (2 L), and then extracted with EtOAc (500 mL c 3). The combined organic layers were dried over Na2S04, filtered, concentrated, and then purified by silica gel chromatography (petroleum ether/EtOAc = 1/1) to give 2-brom o-N-( 1 -i m i no-2-m ethyl propyl )i soni coti nam i de (9 g, 34%) as a white solid. LCMS: 270.0 [M+H]+

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,66572-56-3, its application will become more common.

Reference:
Patent; METACRINE, INC.; SMITH, Nicholas D.; GOVEK, Steven P.; LAI, Andiliy G.; (0 pag.)WO2020/61118; (2020); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem