Category: 152684-30-5

Related Products of 152684-30-5, 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.152684-30-5, name is 5-Bromo-2-methoxy-3-nitropyridine, molecular formula is C6H5BrN2O3, molecular weight is 233.02, as common compound, the synthetic route is as follows.

a) 5-(1 -Benzyl-1 H-pyrazol-4-yl)-2-methoxy-3-nitropyridineAn oven-dried resealable Schlenk tube was charged with 5-bromo-2-methoxy-3- nitropyridine (3.58 g, 15.36 mmol), 1 -benzyl-4-(4,4,5,5-tetramethyl-1 ,3,2-dioxaborolan- 2-yl)-1 H-pyrazole (5.23 g, 18.43 mmol), potassium carbonate (4.24 g, 30.72 mmol), 1 ,4-dioxane (50 mL) and water (5 mL). The Schlenk tube was subjected to three cycles of evacuation-backfilling with argon, and tetrakis(triphenylphosphine)palladium(0) (1 .77 g, 1 .53 mmol) was added. After three further cycles of evacuation-backfilling with argon, the Schlenk tube was sealed and the mixture was stirred and heated in an oil bath to 100 C. After 3 days, the mixture was cooled, filtered through diatomaceous earth (Celite) and the filter cake was washed with methylene chloride (300 mL). The combined filtrate and washings were concentrated in vacuo and the residue was purified by flash chromatography (20-50% ethyl acetate in hexanes) to give the title compound (3.70 g, 84%) as a yellow solid.1H-NMR delta (CDCIs): 4.1 1 (s, 3H), 5.36 (s, 2H), 7.33 (m, 5H), 7.64 (d, 1 H), 7.81(d, 1 H), 8.30 (d, 1 H), 8.49 (d, 1 H).

Statistics shows that 152684-30-5 is playing an increasingly important role. we look forward to future research findings about 5-Bromo-2-methoxy-3-nitropyridine.

Reference:
Patent; ALMIRALL, S.A.; EASTWOOD, Paul Robert; BACH TANA, Jordi; PAGES SANTACANA, Lluis Miquel; WO2013/17461; (2013); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Synthetic Route of 152684-30-5, 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 152684-30-5 as follows.

To a suspension of 5-bromo-2-methoxy-3-nitropyridine (0.4 g, 1.72 mmol) in EtOH(5 mL) and H20 (5 mL) was added iron powder (0.38 g, 6.87 mmol) and NH4Cl (0.39 g, 7.21mmol). The reaction refluxed for 1 h, then cooled down to rt and concentrated in vacuo. Theresidue was diluted with EtOAc (1 0 mL) and the resulted mixture was filtered through a pad ofcelite. The filtrate was extracted with EtOAc (10 mL x 3) and the combined organic phases werewashed with brine (10 mL), dried over anhydrous Na2S04 and concentrated in vacuo to give thetitle compound as a yellow solid (0.3 g, 86%). The title compound was characterized byLC-MS and 1H NMR as shown below:LC-MS (ESI, pos. ion) m/z: 203 [M+Ht;1H NMR (400 MHz, CDCh) 8 (ppm): 3.92 (s, 3H), 4.86 (s, 2H), 7.03 (d, J = 2.0 Hz, 1H), 7.41 (d,J = 2.0 Hz, 1H).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,152684-30-5, its application will become more common.

Reference:
Patent; CALITOR SCIENCES, LLC; SUNSHINE LAKE PHARMA CO., LTD.; XI, Ning; LI, Zhuo; WANG, Tingjin; WU, Zuping; WEN, Qiuling; WO2014/22128; (2014); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Electric Literature of 152684-30-5 ,Some common heterocyclic compound, 152684-30-5, molecular formula is C6H5BrN2O3, 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.

AL 2-Methoxy-3-nitro-5-(4,4,5,5-tetramethyl-L3,2-dioxaborolan-2-yl)pyridine; To a dry flask was added 5-bromo-2-methoxy-3-nitropyridine (1.3 g, 5.0 mmol),4,4,4′,4′,5,5,5′,5′-octamethyl-2,2′-bi(l,3,2-dioxaborolane) (1.6 g, 6.4 mmol), and Pd(dppf)Cl2 (0.2 g, 0.25 mmol). Potassium acetate (1.5 g, 15 mmol) was weighed directly into the flask. The flask was then evacuated and back filled with N2. Anhydrous N,N-dimethylformamide (30 mL) was added and the reaction was heated at 80 0C in an oil bath overnight. The reaction mixture was evaporated to dryness. The residue was dissolved in ethyl acetate (20 mL) and washed with water (20 mL). The organics were dried over sodium sulfate and evaporated to dryness. The resulting material was purified by silica gel chromatography (eluting with 0-50% ethyl acetate in hexane) to yield the product (0.2 g, 15%). ESI-MS m/z calc. 280.12, found 199.1 (MW[-C6Hio]+l)+. Retention time 0.7 minutes.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,152684-30-5, its application will become more common.

Reference:
Patent; VERTEX PHARMACEUTICALS INCORPORATED; WO2008/141119; (2008); A2;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Adding a certain compound to certain chemical reactions, such as: 152684-30-5, 5-Bromo-2-methoxy-3-nitropyridine, 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, Recommanded Product: 152684-30-5, blongs to pyridine-derivatives compound. Recommanded Product: 152684-30-5

To a suspension of 5-bromo-2-methoxy-3-nitropyridine (0.4 g, 1.72 mmol) in EtOH (5 mL) and H2O (5 mL) were added iron powder (0.38 g, 6.87 mmol) and NH4Cl (0.39 g, 7.21 mmol). The reaction was heated to reflux and stirred further for 1 hour, and then concentrated in vacuo. The residue was diluted with EtOAc (10 mL) and the resulted mixture was filtered through a pad of CELITE. The filtrate was extracted with EtOAc (10 mL×3). The combined organic phases were washed with brine (10 mL), dried over anhydrous Na2SO4 and concentrated in vacuo to give the title compound as a yellow solid (0.30 g, 86%). [0301] MS (ESI, pos. ion) m/z: 203.0 [M+H]+; [0302] 1H NMR (400 MHz, CDCl3) delta (ppm): 3.92 (s, 3H), 4.86 (s, 2H), 7.03 (d, J=2.0 Hz, 1H), 7.41 (d, J=2.0 Hz, 1H).

The synthetic route of 152684-30-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; SUNSHINE LAKE PHARMA CO., LTD.; CALITOR SCIENCES, LLC; Xi, Ning; US2014/234254; (2014); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem