Category: 37554-70-4

Application of 37554-70-4, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 37554-70-4, name is 2-Chloro-5-fluoro-4-methoxypyrimidine, molecular formula is C5H4ClFN2O, The compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.

(5-Fluoro-4-methoxypyrimidin-2-yl)phenylamine; To a stirred solution of 2-chloro-5-fluoro-4-methoxypyrimidine (16.0 g, 98.8 mmol) and phenylamine (13.8 g, 141.8 mmol) in 1,4-dioxane (500 ml) was added Cs2CO3 (97.8 g, 296.3 mmol) followed by Pd2(dba)3 (2.7 g, 2.9 mmol) and BINAP (3.1 g, 4.9 mmol) under N2. The mixture was heated at reflux for 12 h. On completion, the mixture was filtered to remove the inorganic salts and the filtrate was partitioned between CH2Cl2 (500 ml) and H2O (500 ml). The CH2Cl2 layer was washed with brine (500 ml), dried over NaSO4 and concentrated in vacuo. The residue was purified by flash column chromatography on silica gel, eluting with 5% EtOAc/PE, to afford 13.0 g (63% yield) of the product as a yellow solid.1H NMR (400 MHz, CDCl3) delta 8.07 (d, J = 2.8 Hz, 1H), 7.61 (d, J = 8.0 Hz, 2H), 7.34 (m, 2H), 7.16 (br s, 1H), 7.07 (m, 1H), 4.06 (s, 3H).

According to the analysis of related databases, 37554-70-4, the application of this compound in the production field has become more and more popular.

Reference:
Article; Wada, Hiroki; Cheng, Lili; Jiang, Ji; Jiang, Zhigan; Xie, Jun; Hu, Tao; Sanganee, Hitesh; Luker, Tim; Tetrahedron Letters; vol. 53; 14; (2012); p. 1720 – 1724;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Application of 37554-70-4 ,Some common heterocyclic compound, 37554-70-4, molecular formula is C5H4ClFN2O, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.

General procedure: (5-Fluoro-4-methoxypyrimidin-2-yl)isobutylamine; To a stirred solution of 2-chloro-5-fluoro-4-methoxypyrimidine (10.0 g, 61.7 mmol) and isobutylamine (6.8 g, 92.6 mmol) in MeCN (200 ml) was added DIEA (11.9 g, 92.6 mmol). The mixture was stirred at 80 C for 12 h. At the end of the reaction, the resulting mixture was cooled and partitioned between EtOAc (200 ml) and H2O (200 ml). The EtOAc layer was washed with brine (200 ml), dried over Na2SO4 and concentrated in vacuo. The residue was purified by flash column chromatography on silica gel, eluting with 2-5% EtOAc/PE to afford 5.2 g (42% yield) of the product as a yellow solid.1H NMR (400 MHz, CDCl3) delta 7.92 (d, J = 2.8 Hz, 1H), 5.03 (br s, 1H), 3.99 (s, 3H), 3.21 (t, J = 6.4 Hz, 2H), 1.91 (m, 1H), 0.99 (d, J = 6.4 Hz, 6H).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,37554-70-4, its application will become more common.

Reference:
Article; Wada, Hiroki; Cheng, Lili; Jiang, Ji; Jiang, Zhigan; Xie, Jun; Hu, Tao; Sanganee, Hitesh; Luker, Tim; Tetrahedron Letters; vol. 53; 14; (2012); p. 1720 – 1724;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia