254-79-5, 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. 1,5-Naphthyridine, cas is 254-79-5,the naphthyridine compound, it is a common compound, a new synthetic route is introduced below.
Example la: Synthesis of 3-bromo-l,5-naphthyridine (C-2) [00305] To a stirred mixture of 1,5-naphthyridine (C-1) (50.0 g, 384 mmol, 1.0 eq) and sodium acetate(62.9 g, 768 mmol, 2.0 eq) in acetic acid (300 mL) at 80 C, a solution of bromine (67.5 g, 422 mmol, 1.1 eq) in acetic acid (80 mL) was added dropwise while keeping the reaction temperature at 80 C to 90 C. After stirring for 2 h at 80 C, the reaction was complete based on TLC analysis. The resulting mixture was cooled to RT and then filtered. The filtrate was concentrated in vacuo and the residue was purified by flash column chromatography on silica gel (0-30% ethyl acetate-petroether) to afford the desired product 3-bromo-l,5-naphthyridine (C-2) (36.5 g, 45 % yield ) as a pale yellow solid. lR NMR (300 MHz, CDC13- (5) delta: 8.97 (m, 2H), 8.57 (s, 1H), 8.37 (d, J = 8.4 Hz, 1H), 7.65 (m, 1H); ESI-MS m/z : 208.96 [M+H]+.
The chemical industry reduces the impact on the environment during synthesis,254-79-5,1,5-Naphthyridine,I believe this compound will play a more active role in future production and life.
Reference£º
Patent; INTELLIKINE, LLC; REN, Pingda; LI, Liansheng; CHAN, Katrina; WO2013/78441; (2013); A1;,
1,8-Naphthyridine – Wikipedia
1,8-Naphthyridine | C8H6N2 – PubChem