Electric Literature of 204452-91-5, The chemical industry reduces the impact on the environment during synthesis 204452-91-5, name is 7-(Dimethoxymethyl)-1,2,3,4-tetrahydro-1,8-naphthyridine, I believe this compound will play a more active role in future production and life.
A solution of 7-(dimethoxymethyl)-1 ,2,3,4-tetrahydro-1 ,8-naphthyridine (intermediate 4, 2 g, 9.60mmol) and diphenylcarbonate (4.11 g, 19.21 mmol) in THF (40 ml) at -15 C was treated withLHMDS (IM in THF, 13.3 ml, 13.3 mmol) over 0.5 h. The reaction mixture was quenched with sat.aq. NH4CI, extracted with EtOAc (2x). The combined organic layers were washed with brine, driedover Na2SO4, filtered and concentrated under reduced pressure. The crude product was purified by normal phase chromatography (80 g silica gel cartridge, heptanes/EtOAc 100:0 to 25:75) to give the title compound as a pale yellow solid. 1H-NMR (400 MHz, DMSO-d6) 5 7.65 (d, I H), 7.46 – 7.38 (m, 2 H), 7.27 – 7.18 (m, 4H), 5.17 (s, I H), 3.87 – 3.80 (m, 2 H), 3.26 (s, 6 H), 2.83 (t, 2 H), 2.00-1.92(m,2H).
In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 7-(Dimethoxymethyl)-1,2,3,4-tetrahydro-1,8-naphthyridine, other downstream synthetic routes, hurry up and to see.
Reference:
Patent; NOVARTIS AG; BUSCHMANN, Nicole; FAIRHURST, Robin Alec; FURET, Pascal; KNOePFEL, Thomas; LEBLANC, Catherine; MAH, Robert; NIMSGERN, Pierre; RIPOCHE, Sebastien; LIAO, Lv; XIONG, Jing; ZHAO, Xianglin; HAN, Bo; WANG, Can; WO2015/59668; (2015); A1;,
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