In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 183208-34-6, name is 5-Bromo-1H-pyrrolo[2,3-b]pyridin-2-one, the common compound, a new synthetic route is introduced below. name: 5-Bromo-1H-pyrrolo[2,3-b]pyridin-2-one
Step 3: 5-(4,4,5,5-tetramethyl-l,3,2-dioxaborolan-2-yl)-lH-pyrrolo[2,3-b]pyridin-2(3H)-one To a solution of 5-bromo-lH-pyrrolo[2,3-b]pyridin-2(3H)-one (3 g, 14.08 mmol) in 1,4-dioxane (60 mL) were added 4,4,4′,4′,5,5,5′,5′-octamethyl-2,2′-bi(l,3,2-dioxaborolane) (4.29 g, 16.9 mmol), potassium acetate (2.07 g, 21.12 mmol) and l,l’-bis(diphenylphosphino)ferrocene- palladium(II)dichloride (1.02 g, 1.41 mmol). The reaction mixture was purged with nitrogen for 2 min and heated to 110 C for 1 h. After cooling down the mixture was filtered and the solid was washed with ethyl acetate. The mother liquid was diluted with methanol and the precipitate was filtered and dried in vacuo to afford 5-(4,4,5,5-tetramethyl-l,3,2-dioxaborolan-2-yl)-lH-pyrrolo[2,3- b]pyridin-2(3H)-one (1.1 g, 30%): lU NMR (400 MHz, DMSO-d6) delta 11.14 (s, 1H), 8.29 (s, 1H), 7.68 (s, 1H), 3.54 (s, 2H), 1.29 (s, 12H).
The synthetic route of 183208-34-6 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; F. HOFFMANN-LA ROCHE AG; GENENTECH, INC.; ESTRADA, Anthony; HUESTIS, Malcolm; KELLAR, Terry; PATEL, Snahel; SHORE, Daniel; SIU, Michael; (260 pag.)WO2016/142310; (2016); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem