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. 85838-94-4, name is tert-Butyl 5,6-dihydropyridine-1(2H)-carboxylate, the common compound, a new synthetic route is introduced below. Recommanded Product: 85838-94-4

To a solution of 0.50 g (2.73 mmol) of tert-butyl 3,6-dihydro-2H-pyridine-i-carboxylate in 30 mL of DCM was added 0.92 g (4.09 mmol) of mCPBA. The resultant solution was stirred at 20C for 18 h. TLCindicated that the reaction was complete. The reaction was diluted with DCM, washed with aq. NaHCO3, aq. Na2S2O3 and brine, dried over Na2SO4, filtered and concentrated. The residue was purified by column chromatography (PE/EA, 5/i, R1= 0.2) to give 0.43 g of tert-butyl 7-oxa-4-azabicyclo[4.i.0]heptane-4- carboxylate as a colorless oil.MS (+ESI): 144.1 [M+H].?H NMR (400 MHz, CDC13) ppm: 4.09-3.58 (m, 2H), 3.57-3.02 (m, 4H), 2.18-1.84 (m, 2H), 1.47 (s,9H).

The synthetic route of 85838-94-4 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; BASILEA PHARMACEUTICA AG; POHLMANN, Jens; STIEGER, Martin; REINELT, Stefan; LANE, Heidi; (286 pag.)WO2016/128465; (2016); A1;,
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

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

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

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

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

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

Application of 960298-00-4 ,Some common heterocyclic compound, 960298-00-4, molecular formula is C12H10BrNO, 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.

To a solution of 2-benzyloxy-4-bromopyridine 6 (201 mg, 0.8 mmol) in MeOH(4.5 mL) was added conc. HCl (2.3 mL). The mixture was heated at reflux overnight.Then the reaction mixture was cooled to room temperature and concentrated underreduced pressure. The residue was poured into cold water and carefully quenchedwith aq. sat. Na2CO3. The aqueous layer was extracted with ethyl acetate (3x). Thecombined organic layers were washed with brine, dried (Na2SO4), filtered andconcentrated under reduced pressure. The crude was purified by flash chromatography on silica gel (EtOAc/MeOH: 98/2) to give 1c (109 mg, 82%) as acolorless solid. Data for 1c are reported above.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,960298-00-4, its application will become more common.

Reference:
Article; Honraedt, Aurelien; Gallagher, Timothy; Synlett; vol. 27; 1; (2016); p. 67 – 69;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Electric Literature of 6972-69-6, 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 6972-69-6, name is N,N-Dimethylnicotinamide. This compound has unique chemical properties. The synthetic route is as follows.

To a solution of docetaxel [501](0.075 g, 0.093 mmol, 1.0 eq) in ACN (5 ml) was added Nal (0.055 g, 0.372 mmol, 4.0 eq) and Nu,Nu-dimethyl nicotinamide (0.023 g, 0.186 mmol, 2.0 eq) at RT. The reaction mixture was 60C over night. Solvent was removed under vacuum, solid residue taken in DCM, inorganic impurities filtered off, DCM removed under vacuum and the product triturated with ether, filtered and vacuum dried to get the product [502].

According to the analysis of related databases, 6972-69-6, the application of this compound in the production field has become more and more popular.

Reference:
Patent; SPHAERA PHARMA PVT. LTD; DUGAR, Sundeep; MAHAJAN, Dinesh; HOLLINGER PETER, Frank; WO2012/137225; (2012); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Application of 38875-53-5, 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 38875-53-5 as follows.

To a solution of 2,3-diamino-5-bromopyridine (5 g, 27 mmol) in THF (87 mL) was added CDI (3.02 g, 18.6 mmol), and the reaction mixture was stirred at 80 C for 16 h. Then, water was added, and the mixture was filtered. The solids were collected by filtration, washed with water and Et2O, and dried under vacuum to afford the title compound (5.3 g, 25 mmol, 93%), which was used in the next step without further purification. MS (ESI): mass calcd. for C6H4BrN3O, 212.95; m/z found, 214 [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,38875-53-5, its application will become more common.

Reference:
Patent; JANSSEN PHARMACEUTICA NV; CHROVIAN, Christa C.; LETAVIC, Michael A.; RECH, Jason C.; RUDOLPH, Dale A.; JOHNSON, Akinola Soyode; STENNE, Brice M.; WALL, Jessica L.; (533 pag.)WO2018/67786; (2018); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem