Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 400755-41-1, name is 3-Methoxy-4-nitro-1H-pyrazole, This compound has unique chemical properties. The synthetic route is as follows., HPLC of Formula: C4H5N3O3
To a suspension of 3-methoxy-4-nitro-1H-pyrazole (2.00 g, 14.0 mmol, 1.00 eq), (R)-1-methyl-pyrrolidin-3-ol (1.56 g, 15.4 mmol, 1.10 eq), and polystyrene bound triphenylphosphine (6.53 g, 19.6 mmol, 1.40 eq, 3 mmol/gram) in THF (140 mL) was added a solution of di-tert-butyl azodicarboxylate (4.51 g, 19.6 mmol, 1.40 eq) in THF (25 mL) in a drop-wise manner over 5 min. The reaction mixture was allowed to stir for 18 hr. The reaction mixture was then diluted with EtOAc (100 mL), filtered and the filtrate concentrated. The crude reaction mixture was purified via flash chromatography on silica gel eluting with a gradient of 50-100% EtOAc in heptane then to 10% 7 N methanolic ammonia/EtOAc to give the title compound (2.39 g, 80% yield) as a white solid. 1H NMR (400 MHz, DMSO-d6) delta ppm 8.69 (s, 1H), 4.84-4.72 (m, 1H), 3.94 (s, 3H), 2.86-2.75 (m, 2H), 2.72 (dd, J=7.0, 10.0 Hz, 1H), 2.40 (dt, J=6.2, 8.4 Hz, 1H), 2.36-2.29 (m, 1H), 2.28 (s, 3H), 2.16-2.06 (m, 1H). m/z (APCI+) for C9H15N4O3 227.2 (M+H)+
Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 400755-41-1.