Tag: M.W:200-300

Adding a certain compound to certain chemical reactions, such as: 1211532-15-8, 6-Methoxy-5-(trifluoromethyl)nicotinic 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, Recommanded Product: 6-Methoxy-5-(trifluoromethyl)nicotinic acid, blongs to pyridine-derivatives compound. Recommanded Product: 6-Methoxy-5-(trifluoromethyl)nicotinic acid

(4-bromophenyl) ((2S) -2- (4-chlorophenyl) piperazin-1-yl) methanone hydrochloride (2 g)6-methoxy-5- (trifluoromethyl) nicotinic acid (1.2 g),HATU (3 g),Triethylamine (2 ml)And DMF (15 ml) was stirred at room temperature for 1 hour. The mixture was extracted with ethyl acetate and water. The obtained organic layer was washed with saturated brine, dried over magnesium sulfate and concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (NH, hexane / ethyl acetate) to give the title compound (2.9 g).

At the same time, in my other blogs, there are other synthetic methods of this type of compound,1211532-15-8, 6-Methoxy-5-(trifluoromethyl)nicotinic acid, and friends who are interested can also refer to it.

Reference:
Patent; TAKEDA PHARMACEUTICAL COMPANY LIMITED; MIZOJIRI, RYO; CARY, DOUGLAS ROBERT; HIRAYAMA, TAKAHARU; ITO, MASAHIRO; TANAKA, TOSHIO; IMAEDA, YASUHIRO; SASAKI, SHIGEKAZU; TAKAMI, KAZUAKI; FUKUDA, KOICHIRO; KAMAURA, MASAHIRO; MORISHITA, NAO; (133 pag.)JP2017/222626; (2017); A;,
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. 866775-18-0, name is Methyl 3-amino-6-bromo-5-(trifluoromethyl)picolinate. This compound has unique chemical properties. The synthetic route is as follows. Safety of Methyl 3-amino-6-bromo-5-(trifluoromethyl)picolinate

Intermediate H1: 3-Amino-6-(2,4-dichloro-phenyl)-5-trifluoromethyl-pyridine-2-carboxylic acid methyl ester3-Amino-6-bromo-5-trifluoromethyl-pyridine-2-carboxylic acid methyl ester (Intermediate A4) (3 g, 10.03 mmol), 2,4-dichlorophenylboronic acid (2.297 g, 12.04 mmol), potassium phosphate (4.26 g, 20.06 mmol) and Fibrecat 1034A (Johnson Matthey, polymer supported palladium complex) (500 mg, 10.03 mmol) were suspended in toluene (50 ml) and water (15 ml). The reaction mixture was heated to 110 C. under vigorous stirring for 3 hours. The mixture was allowed to cool to RT and EtOAc (100 ml) was added. The organic layer was separated and washed with brine (15 ml). MP-TMT (macroporous polystyrene-bound trimercaptotriazine, 3 g, Polymern labs) was added and stirred for 1 hour at RT. MgSO4 was added and the suspension filtered off. The filtrate was concentrated in vacuo and purification of the residue by reverse phase chromatography (130 g C18 column) eluting with water/MeOH afforded the title compound as a white solid; LS-MS Rt=1.55 mins[M+H]+ 365 (Method 2minLC_v002).

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, 866775-18-0, Methyl 3-amino-6-bromo-5-(trifluoromethyl)picolinate.

Reference:
Patent; NOVARTIS AG; US2011/230483; (2011); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Synthetic Route of 1227605-52-8, 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. 1227605-52-8, name is 2-Bromo-5-chloronicotinaldehyde. A new synthetic method of this compound is introduced below.

To a solution of 2,3-dibromo-5-chloropyridine (60 g, 221 mmol) in THF (500 mL) was added a solution of isopropylmagnesium chloride lithium chloride solution in THF (1.3M, 185 mL) at -40 C over about 30 min. The solution was stirred for 30 min at -40 C and DMF (50 mL) was added. The resulting solution was warmed up to room temperature and stirred for 30 min. The reaction was quenched with 1 N HCl (400 mL) and MTBE (200 mL) was added. Organic layer was separated and washed twice with 5% aqueous NaHC03 (200 mL). The solvent was removed under vacuum at 50 C. The resulting solids (aldehyde intermediate) were dissolved in methanol (400 mL). The solution was cooled to 5 C under an ice bath. NaBtit (3.6 g) was added slowly over 30 min while maintaining the reaction temperature below room temperature. The reaction mixture was stirred for another 30 min followed by addition of water (125 mL). The resulting mixture was concentrated under vacuum to approximately 150 ml. Solids precipitated during the concentration. The suspension was stirred vigorously at room temperature for 1 h and solids were collected by filtration. The wet cake was dried in a vacuum oven over night at 60 C to give 1 (45.6 g, 93%) as a solid. 1H NMR (CDC13) 400 MHz): <5 8.26 (d, J= 2.5 Hz, 1H), 7.88 (d, J=2.5 Hz, IK), 4.73 (d, J= 5.8 Hz, 2H), 2.33 (t, J= 1 1.4 Hz, 1H); 13C NMR (CDC13, 100 MHz): delta 147.12, 138.48, 138.39, 136.14, 132.06, 62.76. These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,1227605-52-8, its application will become more common. Reference:
Patent; MERCK SHARP & DOHME CORP.; XIANG, Bangping; YASUDA, Nobuyoshi; WO2013/138413; (2013); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Electric Literature of 887707-23-5, 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 887707-23-5, name is 2-Hydroxy-5-iodo-3-(trifluoromethyl)pyridine. This compound has unique chemical properties. The synthetic route is as follows.

2-choro-5-iodo-3-trifluoromethylpyridine[0072] To an ice-cold mixture OfPOCl3 (1.60 mL) and DMF (1 mL) in a microwave vial, 5-iodo-3-trifluoromethyl-2-pyridinol (1 g, 3.47 mmol) is added. The vial is sealed and heated 20 min at 110 0C. The reaction mixture cooled at room temperature is poured into ice cold water. The product precipitates. The precipitate is filtered, washed with cold water and dried to afford 661 mg (62 %) of a light brown powder. [0073] 1U NMR (500 MHz CDCl3) delta 8.32 (d, J=2.0 Hz, IH), 8.81 (d, J=2.0 Hz,IH). 13C NMR (250 MHz CDCl3) delta 89.4, 121.2 (q, JC-F= 273.3 Hz), 126.8 (q, JC-F= 33.6 Hz), 144.34, 148.5, 158.7.

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 887707-23-5, 2-Hydroxy-5-iodo-3-(trifluoromethyl)pyridine.

Reference:
Patent; SLOAN-KETTERING INSTITUTE FOR CANCER RESEARCH; WO2008/119015; (2008); A2;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Related Products of 1374655-69-2, 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 1374655-69-2, name is 3-Bromo-4-ethyl-5-fluoropyridine. This compound has unique chemical properties. The synthetic route is as follows.

To a stirred solution of 9-chloro-l-methyl-7-(4,4,5,5-tetramethyl-l,3,2- dioxaborolan-2-yl)-4,5-dihydro-[l,2,4] triazolo[4,3-a]quinoline (80-4; 0.717 g, 0.0020 mol) and 3-bromo-4-ethyl-5-fluoropyridine (0.423 g, 0.0020 mol) in the mixture of 1,4- dioxan (5 mL) and water (5 mL) was added sodium carbonate (0.66 g, 0.0062 mol). Reaction mass was purged with argon for the next 20 min. CatalystPd(dppf)2Cl2.dichloromethane (0.084 g, 0.0001 mol) was added and again purged with argon for 10 min and allowed to stirred at 90 C for 4 h. The reaction mixture was filtered through CELITE bed and filter bed was thoroughly washed with ethyl acetate. The collected organic parts was concentrated under vacuum to afford the crude compound, which was purified by silica gel column chromatography followed by preparative HPLC (analytical conditions; column: ZORBAX XDB (150mm X 4.6mm X 3.5um), mobile phase (A): water, Mobile phase (B): MeOH, flow rate : 1.0 mL/min, gradient T/%B:0/20,6/25,25/75,27/20,30/20) to obtain title compound. 1H NMR (400 MHz, DMSO- d6) delta: 8.55 (s, 1 H), 8.32 (s, 1 H), 7.64 (s, 1 H), 7.55 (s, 1 H), 2.94 (bs, 4 H), 2.65-2.59 (m, 2 H), 2.56 (s, 3 H), 1.09-1.05 (t, J = 7.6 Hz, 3 H). MS (M+l): 343.2.

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 1374655-69-2, 3-Bromo-4-ethyl-5-fluoropyridine.

Reference:
Patent; MERCK SHARP & DOHME CORP.; ElexoPharm GmbH; HOYT, Scott, B.; PETRILLI, Whitney Lane; LONDON, Clare; XIONG, Yusheng; TAYLOR, Jerry Andrew; ALI, Amjad; LO, Michael; HENDERSON, Timothy, J.; HU, Qingzhong; HARTMANN, Rolf; YIN, Lina; HEIM, Ralf; BEY, Emmanuel; SAXENA, Rohit; SAMANTA, Swapan Kumar; KULKARNI, Bheemashankar, A.; WO2012/148808; (2012); 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. 2897-43-0, name is 2,6-Dichloro-3-nitropyridin-4-amine. A new synthetic method of this compound is introduced below., SDS of cas: 2897-43-0

To a solution of 2,6-dichloro-3-nitro-pyridin-4-amine (2.6 g, 14.4 mmol) from Step A in MeOH (150 mL) was added Raney Nickel catalyst (2 g) and the reaction agitated under a hydrogen atmosphere in a Parr apparatus (35 p.s.i.) for 2 h . The reaction mixture was filtered through a pad of Celite and concentrated to yield the title compound. MS: m/z = 178 (M + 1).

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, 2897-43-0, 2,6-Dichloro-3-nitropyridin-4-amine.

Reference:
Patent; MERCK & CO., INC.; WO2006/31491; (2006); A2;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Adding a certain compound to certain chemical reactions, such as: 109613-97-0, 2-Bromo-4-methoxypyridin-3-amine, 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, Application In Synthesis of 2-Bromo-4-methoxypyridin-3-amine, blongs to pyridine-derivatives compound. Application In Synthesis of 2-Bromo-4-methoxypyridin-3-amine

To a solution of 2-bromo-4-methoxy-pyridin-3-ylamine (540 mg, 2.66 mmol) in pyridine (20 mL) at 0 C is added ethyl chloroformate (0.38 mL, 3.99 mmol). After 30 min, more chloro formate is added (~18 mmol) is added until the reaction goes to completion. The mixture is partitioned between sat. NaHC03 and EtOAc. The two layers are separated, and the aqueous layer is extracted with EtOAc once. The combined organic layers are washed with H20 and brine, dried over MgS04, filterd, and concentrated in vacuo. The crude material is purified on silica gel with EtOAc/MeOH (100/0 to 90/10) as eluant to yield 0.54 g of the product as a white crystalline solid. 1H NMR (CDC13, 300 MHz) 8.18 (d, J= 5.6, 1H), 6.84 (d, J= 5.7, 1H), 6.02 (br s, 1H), 4.23 (q, J = 7.0, 2H), 3.92 (s, 3H), 1.31 (t, J= 7.2, 3H). LC Rt: 1.89 min; LCMS m/z 275 (M+l, 100%).

The synthetic route of 109613-97-0 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; SANOFI; CHOI-SLEDESKI, Yong Mi; NIEDUZAK, Thaddeus R.; POLI, Gregory B.; SHUM, Patrick Wai-Kwok; STOKLOSA, Gregory T.; ZHAO, Zhicheng; WO2011/78984; (2011); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Application of 885326-88-5, 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 885326-88-5, name is Methyl 6-amino-4-bromopicolinate. This compound has unique chemical properties. The synthetic route is as follows.

To a microwave tube was added methyl 6-amino-4-bromopicolinate (CAS: 885326-88-5, Vendor: PharmBlock, 231 mg, 1.00 mmol), THF (3 mL) and LiBH4 (2 M in THF, 1 mL, 2.00 mmol). After being stirred at 65 C for 2 hrs under microwave, the reaction was quenched by adding Na2S04 * 10H2O and the mixture was stirred at rt for another hour. Then it was filtered through celite and the filtrate was concentrated to give compound 45a (230 mg) as a crude oil. MS: calc’d 203 (MFP), measured 203 (MH+).

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 885326-88-5, Methyl 6-amino-4-bromopicolinate.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; LIU, Haixia; SHEN, Hong; ZHU, Wei; HU, Taishan; ZHANG, Zhisen; ZHANG, Zhiwei; DEY, Fabian; WANG, Xiaoqing; (89 pag.)WO2019/238629; (2019); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Related Products of 28733-43-9, 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 28733-43-9, name is 5-Bromonicotinamide. This compound has unique chemical properties. The synthetic route is as follows.

To a solution of methyltriphenylphosphonium bromide (2 97 g, 8 33 mmol) in THF {45 mL) at -78 C was added n-butylltthium (2.5 M in hexanes, 2 7 mL, 6 75 mmol) The resulting yellow reaction mixture was stirred for 30 min at -78 C. In a separate flask THF (9 mL) was added to 5-bromonicotiotanaldehyde (CASNo. 113118-81-3 , 837 mg, 4 5 mmol). The resulting 5-bromoniotacotiotanaldehyde solution was the transferred, via cannula, to the phosphonium ylide mixture followed by a 2 mL THF wash The reaction was allowed to warm to room temperature over 120 minutes and then permitted to stir for an additional 30 minutes The reaction was then quenched with saturated aqueous sodium bicarbonate and diluted with ethyl acetate The layers were separated and the organic layer was washed with saturated aqueous sodium bicarbonate The organic layer was concentrated to near dryness and the resulting residue was then diluted with ethyl acetate and 1 M sodium bisulfate and the layers were separated The organic layer was extracted two additional times with 1M sodium bisulfate. The aqueous layers were combined, diluted with dichloromethane, and neutralized via the careful addition of saturated aqueous sodium bicarbonate and solid sodium carbonate The layers were separated and the now basic aqueous layer was extracted three additional times with dichloromethane The dichloromethane layers were combined, dried over anhydrous sodium sulfate, filtered and concentrated, The resulting residue was purified by silica gel flash chromatography (ethyl acetate-dichloromethane, 0 to 16%) to furnish 3-bromo-4- vinyl-pyndine, MS. (ES+) m/z 183.9 (M+H)’

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 28733-43-9, 5-Bromonicotinamide.

Reference:
Patent; NOVARTIS AG; ADAMS, Christopher Michael; CHAMOIN, Sylvie; HU, Qi-Ying; ZHANG, Chun; WO2010/130794; (2010); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Related Products of 6945-67-1, 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.6945-67-1, name is 2-Bromo-4-nitropyridine, molecular formula is C5H3BrN2O2, molecular weight is 202.99, as common compound, the synthetic route is as follows.

2-bromo-4-nitropyridine(1.00g, 4.93mmol),4,4-difluoropiperidine hydrochloride(1.16g, 7.39mmol) and cesium carbonate (4.82g, 14.78mmol) were dissolved in 20mL 1,4-Dioxane solution, heated to 100 reaction overnight, LC-MS detection.The reaction is completed, cooled to room temperature, filtered,The filtrate was concentrated and purified by column chromatography to obtain the title compound.

Statistics shows that 6945-67-1 is playing an increasingly important role. we look forward to future research findings about 2-Bromo-4-nitropyridine.

Reference:
Patent; Nanjing Shenghe Pharmaceutical Co., Ltd.; Wang Yong; Zhao Liwen; Wang Yazhou; Quan Xu; Liu Haixuan; Wang Xiaowei; Zhang Yan; Li Xue; Cao Chen; Guo Zhuang; Lv Kunzhi; Wang Hai; Zheng Guochuang; (126 pag.)CN111196804; (2020); A;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem