Category: 1187236-18-5

Reference of 1187236-18-5, Adding some certain compound to certain chemical reactions, such as: 1187236-18-5, name is Ethyl 7-bromoimidazo[1,2-a]pyridine-2-carboxylate,molecular formula is C10H9BrN2O2, 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 1187236-18-5.

A mixture of 258-2 (300 mg, 1.12 mmol), B (356 mg, 1.23 mmol), Cul (21 mg, 0.11 mmol), K3PO4 (473 mg, 2.23 mmol), and picolinic acid (28 mg, 0.22 mmol) in DMSO (6 ml) is sparged with N2 for 5 min, and heated at 90 C overnight. The reaction mixture is cooled to ambient temperature, diluted with EtOAc and water, and filtered. The filtrate is washed with water and brine. The organic layer is dried, concentrated, and purified Si02 (0-6%, MeOH in DCM) to give 258-3

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. 1187236-18-5, Ethyl 7-bromoimidazo[1,2-a]pyridine-2-carboxylate, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; ABEYWARDANE, Asitha; BRUNETTE, Steven Richard; BURKE, Michael Jason; KIRRANE, Thomas Martin, Jr.; MAN, Chuk Chui; MARSHALL, Daniel Richard; PADYANA, Anil Kumar; RAZAVI, Hossein; SIBLEY, Robert; SMITH KEENAN, Lana Louise; SNOW, Roger John; SORCEK, Ronald John; TAKAHASHI, Hidenori; TAYLOR, Steven John; TURNER, Michael Robert; YOUNG, Erick Richard Roush; ZHANG, Qiang; ZHANG, Yunlong; ZINDELL, Renee M.; WO2014/14874; (2014); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Reference of 1187236-18-5, 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 1187236-18-5 as follows.

Under the protection of -78 C and N2,To ethyl 7-bromoimidazo[1,2-a]pyridine-2-carboxylate (3.50 g, 13.0 mmol)Add in anhydrous DCM (80 mL) suspensionDiisobutylaluminum hydride (18.50 mL, 18.50 mmol, 1.0 M).The mixture was stirred at -78 C overnight.After the reaction is over, move to 0 C.And add water (0.75mL) in turn.15% NaOH aqueous solution (0.75mL)The reaction was quenched with water (2 mL).The resulting mixture was stirred at room temperature for 15 minutes.Then add Et2O (50 mL),EtOAc (50 mL) and Mg 2 SO 4 (20 g).Continue stirring for 15 minutes and filter again.The resulting filter cake was rinsed with EtOAc (200 mL).The filtrate was concentrated under reduced pressure.The residue obtained was purified by silica gel column chromatography (EtOAc /EtOAcTo give the title compound as a pale yellow solid (1.50g, 51% yield).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,1187236-18-5, its application will become more common.

Reference:
Patent; Guangdong Dongyangguang Pharmaceutical Co., Ltd.; Jiatuo Sciences Corporation; Xi Ning; Li Minxiong; Peng Ju; Li Xiaobo; Zhang Tao; Hu Haiyang; Chen Wuhong; Bai Changlin; Ke Donghua; Chen Peng; (217 pag.)CN109776522; (2019); A;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Reference of 1187236-18-5, 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. 1187236-18-5, name is Ethyl 7-bromoimidazo[1,2-a]pyridine-2-carboxylate. A new synthetic method of this compound is introduced below.

To a solution of ethyl 7-bromoimidazo[l,2-a]pyridine-2-carboxylate (400 mg, 1.486 mmol) in dry THF (3 mL) at 0 0 C was added L1AIH4 (56.4 mg, 1.486 mmol) in a schlenk tube. After the mixture stirred for 16 hours at 25C, TLC indicated the reaction was completed. The mixture was diluted with saturated aqueous H4CI (20 mL) and extracted with ethyl acetate (70 mL x 3). The combined organic layers were washed with water (40 mL) and brine (50 mL), dried over anhydrous sodium sulfate, filtered and concentrated. The crude product was purified by silica gel chromatography (pet. ether/ethyl acetate) to give the title compound.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,1187236-18-5, its application will become more common.

Reference:
Patent; MERCK SHARP & DOHME CORP.; MSD R&D (CHINA) CO., LTD.; ACTON, John, J., III; BAO, Jianming; DENG, Qiaolin; EGBERTSON, Melissa; FERGUSON, Ronald, III; GAO, Xiaolei; HARRISON, Scott Timothy; KNOWLES, Sandra, L.; LI, Chunsing; LO, Michael Man-Chu; MAZZOLA, Robert, D., Jr.; MENG, Zhaoyang; NA, Meng; RUDD, Michael, T.; SELYUTIN, Oleg, B.; TELLERS, David, M.; TONG, Ling; ZHANG, Fengqi; (195 pag.)WO2019/5587; (2019); A1;,
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. 1187236-18-5, name is Ethyl 7-bromoimidazo[1,2-a]pyridine-2-carboxylate. This compound has unique chemical properties. The synthetic route is as follows. Safety of Ethyl 7-bromoimidazo[1,2-a]pyridine-2-carboxylate

To a suspension of ethyl 7-bromoimidazo[l,2-a]pyridine-2-carboxylate (3.50 g, 13.0 mmol) in anhydrous DCM (80 mL) was added diisobutyl aluminum hydride (18.50 mL, 18.50 mmol, 1.0 M) at -78 C under N2 atmosphere. The mixture was stirred at -78 C overnight and then moved to 0 C, and quenched with water (0.75 mL), 15% NaOH aqueous solution (0.75 mL) and another water (2 mL) successively. The resulting mixture was stirred at rt for 15 min. To the mixture were added Et20 (50 mL), EtOAc (50 mL) and hydrous Mg2S04 (20 g), stirred for 15 min, filtered. The filter cake was washed with EtOAc (200 mL), the filtrate was concentrated in vacuo. The residue was purified by silica gel column chromatography (EtOAc/PE (v/v) = 1/10 to 1/5) to afford the title compound as a light-yellow solid (1.50 g, 51%).MS (ESI, pos. ion) m/z: 225.0 [M+H]+;1H NMR (400 MHz, CDCl3) d (ppm): 10.14 (s, 1H), 8.13 (s, 1H), 8.04 (d, J= 7.2 Hz, 1H), 7.89 (s, 1H), 7.02 (dd, j= 7.2, 1.7 Hz, 1H).

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, 1187236-18-5, Ethyl 7-bromoimidazo[1,2-a]pyridine-2-carboxylate.

Reference:
Patent; SUNSHINE LAKE PHARMA CO., LTD.; CALITOR SCIENCES, LLC; XI, Ning; LI, Minxiong; PENG, Ju; LI, Xiaobo; ZHANG, Tao; HU, Haiyang; CHEN, Wuhong; BAI, Changlin; KE, Donghua; CHEN, Peng; (281 pag.)WO2019/99311; (2019); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem