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. 31108-57-3, name is 1H-Pyrazole-4-carbonitrile, A new synthetic method of this compound is introduced below., Application In Synthesis of 1H-Pyrazole-4-carbonitrile
To a suspension of TEA (35.2 mg, 0.348 mmol) and lH-pyrazole-4-carbon (12.9 mg, 0.139 mmol) in DMF (5 mL) was added Jl (50 mg, 0.116 mmol) at 25C under N2. The mixture was stirred at 25C for 16 h. The mixture was concentrated to give a light yellow soild. The solid was purified by pre-HPLC (Column:YMC-Actus Triart CI 8 100*30mm*5um; Condition: water(0.05%HCl)-ACN; Gradient 53%-83%B; Gradient Time(min):9.5) to afford Compound 26 (22 mg, 43% ) as a solid. *H NMR (400 MHz, CDC13) delta 7.85 (s, 1H), 7.81 (s, 1H), 5.05-4.87 (m, 2H), 3.88-3.82 (m, 1H), 2.70-2.58 (m, 1H), 2.28-2.15 (m, 1H), 2.05-1.56 (m, 7H), 1.48-1.15 (m, 17H), 0.76 (s, 3H), 0.66 (s, 3H). (0615) LCMS Rt = 0.828 min in 1.5 min chromatography, 5-95 AB, purity 100 %, MS ESI calcd. for C26H34N3O [M+H-2H20]+ 404, found 404.
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.