Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 16034-46-1, name is 1-Methyl-1H-pyrazole-5-carboxylic acid, A new synthetic method of this compound is introduced below., Computed Properties of C5H6N2O2
A mixture of 2-methyl-4-(6-(trifluoromethyl)quinolin-2-yl)aniline (10 g, 33.08 mmol, 1.00 equiv), l-methyl-lH-pyrazole-5-carboxylic acid (4.4 g, 34.89 mmol, 1.05 equiv), DIPEA (8.5 g, 65.77 mmol, 2.00 equiv) and HATU (4.4 g, 11.57 mmol, 1.50 equiv) in DMF (200 mL) was stirred overnight at room temperature. The reaction was quenched by the addition of 600 mL of water, extracted three times with 200 mL of ethyl acetate and the combined organic layers washed with 50 mL of water. Volatiles were eliminated under reduced pressure. The crude product was purified by recrystallization with methanol to afford the desired final product as a yellow solid in 76% yield. (ES, m/z): [M+H]+ 411; -NMR (DMSO-de, 300MHz, ppm): 52.40(s,3H), 54.12(s,3H), 57.12-7.13(d,lH), 57.57-7.61(m,2H), 58.00-8.04(d,lH), 58.19-8.36(m, 4H), 58.54 (s, 1H), 58.66-8.69 (d, 1H), 510.00 (s,lH).
The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.