Related Products of 4983-28-2 , The common heterocyclic compound, 4983-28-2, name is 2-Chloro-5-hydroxypyrimidine, molecular formula is C4H3ClN2O, 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.
To a stirred solution of 2-chloropyrimidin-5-ol (1.50 g, 1 1.6 mmol) in dichloromethane (20 mL) was added 4-fluorophenylboronic acid (3.30 g, 23.2 mmol), copper(II) acetate (2.49 g, 13.9 mmol) and triethylamine (8.0 mL, 57 mmol). The mixture was left open to the air and stirred overnight. The suspension was then filtered through a pad of Celite and concentrated. The residue was purified by flash chromatography over silica using a hexane/ethyl acetate eluant to afford 2-chloro-5-(4-fluorophenoxy)pyrimidine as a light yellow solid (0.400 g, 17percent). Exchanging 2-chloro-4-(4-fluorophenyl)pyrimidine for this intermediate, ethyl piperidine-4-carboxylate for ethyl 4-fluoropiperidine-4-carboxylate hydrochloride and Intermediate 5 for Intermediate 1 , the final three steps of Example 41 were used to prepare the title compound. 1H NMR (400 MHz, CD3OD) delta 8.20 (s, 2H), 7.09-6.99 (m, 4H), 4.70-4.66 (m, 2H), 3.33-3.16 (m, 3H), 2.90-2.83 (m, 5H), 2.30-2.01 (m, 3H), 1.92-1.89 (m, 4H), 1.70-1.50 (m, 5H) ppm. 13C NMR (100 MHz, CD3OD) delta 172.4, 172.2, 159.8, 158.5, 157.4, 154.4, 150.0, 143.3, 1 18.2, 1 18.1 , 1 16.1 , 1 15.8, 95.7, 93.8, 60.7, 52.8, 45.6, 45.5, 39.6, 31.5, 31.4, 31.3, 31.2, 29.3, 23.0, 21.8, 21.3 ppm. Purity: > 99percent LCMS (214 nm & 254 nm); retention time 1.39 min; (M+H+) 458.0.
The synthetic route of 4983-28-2 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; GENZYME CORPORATION; BOURQUE, Elyse; CABRERA-SALAZAR, Mario, A.; CELATKA, Cassandra; CHENG, Seng, H.; HIRTH, Bradford; GOOD, Andrew; JANCSICS, Katherine; MARSHALL, John; METZ, Markus; SCHEULE, Ronald, K.; SKERLJ, Renato; XIANG, Yibin; ZHAO, Zhong; LEONARD, John; NATOLI, Thomas; MAKINO, Elina; HUSSON, Herve; BESKROVNAYA, Oxana; WO2014/43068; (2014); A1;,
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