Related Products of 5932-27-4, 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. 5932-27-4 name is Ethyl 1H-pyrazole-3-carboxylate, This 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.
A mixture of E15 (200 mg, 0.45 mmol), K2C03 (188 mg, 1.36 mmol), ethyl lH-pyrazole-3- carboxylate (317 mg, 2.27 mmol) and DMF (2 mL) were was stirred at 25 ¡ãC for 12 hours. TLC showed the reaction was finished. The mixture was diluted with EtOAc (20 mL), washed with brine (30mL*3), and the organic layer was dried over anhydrous Na2S04, and then concentrated to give crude product. It was purified by column chromatography (petroleum ether: ethyl acetate = 4:1) to give the 92 (96 mg, 44.4 percent) as a white solid. 1H NMR (92): (400 MHz, CDC13) delta 7.42 (d, J=2.4 Hz, 1H), 6.86 (d, J=2.4 Hz, 1H), 5.05-4.95 (m, 2H), 4.39 (q, J=7.2Hz, 2H), 4.20-4.10 (m, 1H), 3.49-3.39 (m, 2H), 3.28 (s, 3H) ,2.60-2.55 (m, 1H), 2.22 -1.91 (m, 3H), 1.75-1.50 (m, 6H), 1.45-1.10 (m, 15H), 1.05-0.92 (m, 1H), 0.90-0.84 (m, 1H), 0.70 (s, 3H)
At the same time, in my other blogs, there are other synthetic methods of this type of compound, Ethyl 1H-pyrazole-3-carboxylate, and friends who are interested can also refer to it.