Related Products of 72788-94-4,Some common heterocyclic compound, 72788-94-4, name is 2-Chloro-5-(hydroxymethyl)pyrazine, molecular formula is C5H5ClN2O, 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 (5-chloropyrazin-2-yl)methanol (0.50 g, 3.46 mmol) in DCM (10 mL) was added imidazole (0.94 g, 13.84 mmol) followed by TBDMS-Cl (1.04 g, 6.92 mmol) and stirring continued at ambient temperature for 12 h. The resulting reaction mixture was diluted with water (40 mL) and extracted with DCM (2 x 40 mL). The combined organic layers were dried over anhydrous sodium sulfate and evaporated under reduced pressure. The residue was purified by column chromatography (Redisep-24 g, 5- 10 % EtOAc/n-hexane) to obtain Intermediate 103A (0.85 g, 89.00%). 1H NMR (400 MHz, DMSO-d6) G ppm 0.11 (s, 6 H), 0.91 (s, 9 H), 4.84 (s, 2 H), 8.50 (s, 1 H), 8.75 (d, J = 1.00 Hz, 1 H). LCMS (Method-D): retention time 3.69 min, [M+H] 259.
The synthetic route of 72788-94-4 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; BRISTOL-MYERS SQUIBB COMPANY; YADAV, Navnath Dnyanoba; BHIDE, Rajeev S.; BORA, Rajesh Onkardas; GUNAGA, Prashantha; PANDA, Manoranjan; PRIESTLEY, Eldon Scott; RICHTER, Jeremy; (444 pag.)WO2018/222795; (2018); A1;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem