Category: 257280-25-4

Adding a certain compound to certain chemical reactions, such as: 257280-25-4, 5-Bromo-2-phenoxypyrimidine, 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: 257280-25-4, blongs to pyrimidines compound. Recommanded Product: 257280-25-4

2-Phenoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl) pyrimidine (intermediate AV) A mixture of 5-bromo-2-phenoxy-pyrimidine (intermediate AU) (3.00 g, 0.0119 mol), diboron pinacol ester (3.64 g, 0.0143 mol), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II) complex with dichloromethane (1:1) (0.29 g, 0.00036 mol) and potassium acetate (3.52 g, 0.0358 mol) in N,N-dimethylformamide (70 ml) was heated at 80 C. under a nitrogen atmosphere overnight. The mixture was allowed to cool to ambient temperature and then most of the solvent was removed under reduced pressure. Dichloromethane (70 ml) was added to the residue and the resulting solids were removed by filtration through a pad of celite. The filtrate was concentrated to leave dark oil. The residue was dissolved in dichloromethane (5 mL) and added to heptane (75 mL). The mixture was filtered, and the precipitate was slurried in heptane (75 mL) for 17 hours. After filtration and drying and dried in vacuo 2-phenoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-pyrimidine was obtained as a grey solid (2.95 g, 0.00989 mol): 1H NMR (DMSO-d6, 400 MHz) 8.75 (s, 2H), 7.45 (t, 2H), 7.27 (t, 1H), 7.20 (d, 2H), 1.31 (s, 12H)

At the same time, in my other blogs, there are other synthetic methods of this type of compound,257280-25-4, 5-Bromo-2-phenoxypyrimidine, and friends who are interested can also refer to it.

Reference:
Patent; Abbott Laboratories; US6921763; (2005); B2;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Application of 257280-25-4, 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.257280-25-4, name is 5-Bromo-2-phenoxypyrimidine, molecular formula is C10H7BrN2O, molecular weight is 251.08, as common compound, the synthetic route is as follows.

Synthesis of 2-(2-chloro-6-fluorophenyl)-5-(2-phenoxypyrimidin-5-yl)- lH-imidazole-4-carbonitrile (EX-43)[000265] A solution of 5-bromo-2-phenoxypyrimidine (1-28) (0.3 mmol) and hexamethylditin (0.3 mmol) in DME (3 mL) was degassed with nitrogen for 5 minutes. Pd(PPh3 )4 (0.015 mmol) was added and the reaction was heated at 80 0C for 12 hours. The reaction was subsequently cooled to room temperature and extracted with EtOAc. The organic layer was washed with brine, dried over MgSO4, filtered and reduced to dryness. The crude product was purified by flash column chromatography (hexanes : EtOAc = 9 : 1) to afford 5-(trimethylstannyl)-2-phenoxypyrimidine (1-29) as a clear oil. MS (m/z) (M+l)+: 335.0, 337.0. [000266] 5-(Trimethylstannyl)-2-phenoxypyrimidine (1-29) (0.16 mmol) and 5-bromo-2- (2-chloro-6-fluorophenyl)-lH-imidazole-4-carbonitrile (1-10) (0.083 mmol) were dissolved in DME (2 mL) and degassed for 5 minutes with nitrogen. Pd(PPh3)4 (0.0082 mmol) was added and the reaction was heated at 85 0C for 12 hours. The reaction was cooled to room temperature and partitioned with EtOAc and water. The organic layer was washed with brine, dried over MgSO4, filtered and reduced to dryness. The crude product was purified by flash column chromatography (hexanes : EtOAc = 3 : 1) to afford 2-(2-chloro-6- fluorophenyl)-5-(2-phenoxypyrimidin-5-yl)-lH-imidazole-4-carbonitrile (EX-43) as white glassy solid. 1U NMR (400MEtaz, d4-MeOO) delta 8.95 (s, 2H), 7.50 (m, IH), 7.37 (m, 3H), 7.21 (m, 2H), 7.14 (m, 2H). MS (m/z) (M+l)+: 392.5.

Statistics shows that 257280-25-4 is playing an increasingly important role. we look forward to future research findings about 5-Bromo-2-phenoxypyrimidine.

Reference:
Patent; IRM LLC; CHIANELLI, Donatella; MOLTENI, Valentina; ALBAUGH, Pamela A.; CHOI, Ha-Soon; LOREN, Jon; WANG, Zhicheng; MISHRA, Pranab; WO2010/127152; (2010); A2;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Application of 257280-25-4, 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 257280-25-4, name is 5-Bromo-2-phenoxypyrimidine. This compound has unique chemical properties. The synthetic route is as follows.

5-Bromo-2-phenoxypyrimidine (Formula 12-2, 412 mg, 1.64 mmol) synthesized in Step 1 was dissolved in THF (10 ml), cooled to -78 C, and 1.6M n-butyl Lithium (1.85 ml, 2.95 mmol, 1.8 eq) was added dropwise. Then, after stirring for 1 hour at the same temperature, triisopropylborate (0.762 ml, 3.28 mmol, 2 eq) was added dropwise at the same temperature. The reaction mixture was stirred at the same temperature for 1 hour, then raised to 0 C. and 4.5M aqueous potassium hydrogendifluoride solution (1.1 ml, 4.92 mmol, 3 eq) was added dropwise. The reaction mixture was stirred at room temperature for 1 hour. After completion of the reaction, the solvent was removed under reduced pressure. Thereafter, the reaction mixture was dissolved in methanol and filtered, and the filtrate was reduced under reduced pressure to obtain a target compound (Formula 12-3).

According to the analysis of related databases, 257280-25-4, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Dae Caliber Buk Peak Medical Industry Promotion Foundation; Establishment Am Center; Song Min-su; Im Chun-yeong; Park Ga-yeong; Go Eun-bi; Kang Ji-hui; Woo Seo-yeon; Kim Sung-hyeon; Hwang Hui-jong; Lee Eun-hye; Kim Hyo-ji; Kim Su-yeol; (155 pag.)KR2019/109007; (2019); A;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia