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, 2-Fluoro-5-nitrobenzonitrile, other downstream synthetic routes, hurry up and to see.
Electric Literature of 17417-09-3, The chemical industry reduces the impact on the environment during synthesis 17417-09-3, name is 2-Fluoro-5-nitrobenzonitrile, I believe this compound will play a more active role in future production and life.
Intermediate 82A: 2-(3-Ethyl-2-oxo-pyrrolidin-1-yl)-5-nitro-benzonitrile To a solution of 3-ethylpyrrolidin-2-one (0.89 g, 7.865 mmol) in DMF (25 mL) was added sodium hydride (60%, 346 mg, 8.651 mmol) at 0 C. (ice-bath). The mixture was stirred for 30 minutes at 0 C., then the ice-bath was removed and the mixture stirred for another 30 minutes at RT. A solution of 2-fluoro-5-nitrobenzonitrile (1.306 g, 7.865 mmol) in DMF (5 mL) was added dropwise via syringe and the resulting dark red solution was stirred for 1 hour at RT. The reaction mixture was poured into a mixture of 2M HCl (50 mL) and crushed ice (?50 g) and the organics were extracted with EtOAc (3*50 mL). The combined organic extracts were washed with water (80 mL) and brine (50 mL), dried (Na2SO4) and concentrated at reduced pressure. Purification by Biotage Isolera chromatography (silica gel, eluting with heptanes-EtOAc, 1:0 to 1:1) afforded the title compound (racemic mixture; 1.18 g, 57% yield) as pale yellow solid. 1H NMR (500 MHz, DMSO-d6) delta [ppm] 8.74 (d, J=2.7 Hz, 1H), 8.54 (dd, J=9.0, 2.7 Hz, 1H), 7.79 (d, J=9.0 Hz, 1H), 4.05-3.97 (m, 1H), 3.87-3.80 (m, 1H), 2.66-2.57 (m, 1H), 2.37-2.28 (m, 1H), 1.91-1.73 (m, 2H), 1.58-1.46 (m, 1H), 0.97 (t, J=7.5 Hz, 3H); LCMS (Analytical Method A): Rt=1.06 mins, MS (ESIpos): m/z=259.95 (M+H)+.
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, 2-Fluoro-5-nitrobenzonitrile, other downstream synthetic routes, hurry up and to see.
Reference:
Patent; Bayer Pharma Aktiengesellschaft; Baeurle, Stefan; Nagel, Jens; Rotgeri, Andrea; Davenport, Adam James; Stimson, Christopher Charles; (86 pag.)US2019/194148; (2019); A1;,
Nitrile – Wikipedia,
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