Reference of 73112-16-0, 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 73112-16-0, name is 2,6-Dibromo-4-methylpyridine. This compound has unique chemical properties. The synthetic route is as follows.
Step 1 : 2,6-dibromo-4-methylpyridine (300 mg, 1.20 mmol), tert-butyl carbamate (168 mg, 1.44 mmol), sodium ie/t-butoxide (138 mg, 1.44 mmol) and l,l’-bis(di-tert- butylphosphino)ferrocene palladium dichloride (39.0 mg, 0.06 mmol) were dissolved in nitrogen sparged 2-MeTHF. The system was evacuated and purged with nitrogen (3X) then placed into 70C oil bath. After 3 hours, the temperature was increased to 80C for 4 hours. The reaction mixture was diluted with EtOAc and brine. The product was extracted with EtOAc, washed with brine, dried and concentrated under reduced pressure to afford crude iert-butyl {4-methyl-6- [(trimethylsilyl)ethynyl]pyridin-2-yl} carbamate. Copper (I) iodide (0.13 g, 0.7 mmol) and bis(triphenylphosphine)palladium(II) dichloride (0.24 g, 0.35 mmol) were added to the crude product and then dissolved in nitrogen sparged dimethylacetamide. The system was evacuated and purged with nitrogen (3X). Triethylamine (1.5 mL, 10.45 mmol) and trimethylsilylactylene (1.5 mL, 10.45 mmol) were added and the solution was stirred at room temperature overnight. The reaction mixture was diluted with EtOAc (25 mL) and brine. The product was extracted with EtOAc (25 mL), washed with brine, dried and concentrated under reduced pressure. The residue was purified by column chromatography on silica gel (5% EtOAc). The fractions were concentrated under reduced pressure, suspended in hexanes, filtered in vacuo and dried to afford iert-butyl {4-methyl-6-[(trimethylsilyl)ethynyl]pyridin-2-yl} carbamate. MS ESI calcd. for Ci6H25N202Si [M + H]+ 305, found 305.
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 73112-16-0, 2,6-Dibromo-4-methylpyridine.
Reference:
Patent; MERCK SHARP & DOHME CORP.; MERCK CANADA INC.; MACHACEK, Michelle R.; ROMEO, Eric T.; KATTAR, Solomon D.; CHRISTOPHER, Matthew; ALTMAN, Michael D.; NORTHRUP, Alan B.; ELLIS, John Michael; BOYLE, Brendan O’; DONOFRIO, Anthony; GRIMM, Jonathan; REUTERSHAN, Michael H.; CHILDERS, Kaleen Konrad; OTTE, Ryan D.; CASH, Brandon; DUCHARME, Yves; HAIDLE, Andrew M.; SPENCER, Kerrie; VITHARANA, Dilrukshi; WU, Lingyun; ZHANG, Li; ZHANG, Peng; BEAULIEU, Christian; GUAY, Daniel; WO2014/48065; (2014); A1;,
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