Related Products of 886365-47-5, 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 886365-47-5, name is 1-(5-Bromo-2-chloropyridin-3-yl)ethanone. This compound has unique chemical properties. The synthetic route is as follows.
A mixture of 1-(5-bromo-2-chloropyridin-3- yl)ethanone (4.85 g, 0.85 mmol) and N,N-dimethylformamide dimethyl acetal (15 mL, 113 mmol) was stirred at 85C for 90 minutes in an oil bath. The mixture was cooled to room temperature, and concentrated under reduce pressure. The residue was diluted by addition of ethanol (30 mL) and water (15 mL), acetic acid (3.3 mL, 58 mmol) and 2-hydrazinoethanol (1.83 mL, 26.9 mmol) was added thereto at room temperature, and the mixture was stirred at 90C for 4 hours in an oil bath. The mixture was cooled to room temperature, and neutralized by addition of a 1.0 mol/L aqueous solution of sodium hydroxide, followed by extraction with chloroform. The organic layer was washed with a saturated aqueous solution of sodium chloride and dried over anhydrous sodium sulfate. After filtration, the solvent was distilled off under reduced pressure, and the residue was purified in an automatic chromatography apparatus (n-hexane/ethyl acetate = 100/0- 0/100) to obtain 2-[5-(5-bromo-2-chloropyridin-3-yl)- 1H-pyrazol-1-yl]ethanol (3.62 g) as a mixture containing positional isomers. To a solution of 2-[5-(5-bromo-2- chloropyridin-3-yl)-1H-pyrazol-1-yl]ethanol (3.62 g) as a mixture containing positional isomers obtained in the above step in N,N-dimethylformamide (240 mL) was added potassium carbonate (3.31 g, 23.9 mmol) at room temperature, and the mixture was stirred at 120C for 2 hours in an oil bath. The reaction mixture was cooled, and an insoluble material was filtered off. The residue was washed with ethyl acetate, and the filtrate and the washes were combined. The solvent was distilled off under reduced pressure, and the residue was purified in an automatic chromatography apparatus (Yamazen Co. Ltd., High-flashTM column Amino, n-hexane/ethyl acetate = 100/0- 30/70) to obtain the title compound (101 mg, yield for 2 steps: 57%)?H NNR spectrum (CDC13, 400MHz) oe: 8.27 (1H, d, J =2.3 Hz), 8.18 (1H, d, J= 2.3 Hz), 7.55 (1H, d, J=2.0 Hz), 6.69 (1H, d, J = 2.0 Hz), 4.74-4.72 (2H, m),4.62-4.60 (2H, m)
According to the analysis of related databases, 886365-47-5, the application of this compound in the production field has become more and more popular.
Reference:
Patent; DAIICHI SANKYO COMPANY, LIMITED; SANFORD BURNHAM PREBYS MEDICAL DISCOVERY INSTITUTE; MIYAZAKI, Shojiro; INUI, Masaharu; KUROSAKI, Yasunobu; YAMAMOTO, Yuko; IZUMI, Masanori; SOMA, Kaori; PINKERTON, Anthony; KISHIDA, Masamichi; (309 pag.)WO2018/119444; (2018); A1;,
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