Application of 38858-90-1, The chemical industry reduces the impact on the environment during synthesis 38858-90-1, name is 4-Methyl-3-nitro-1H-pyrazole, I believe this compound will play a more active role in future production and life.
A solution of 4-methyl-3-nitro-1H-pyrazole (500 mg, 3.93 mmol), iodomethane (837.9 mg, 5.9 mmol) and potassium tert-butoxide (484.6 mg, 4.33 mmol) in tetrahydrofuran (20 mL) was stirred at 25 C. for 1 hour. The solvent was concentrated under vacuum. The residue was purified by flash chromatography on silica gel eluting with dichloromethane/methanol (10/1) to afford 1,4-dimethyl-3-nitro-pyrazole (450 mg, 3.18 mmol) as a white solid. LCMS (ESI) [M+H]+=142
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, 4-Methyl-3-nitro-1H-pyrazole, other downstream synthetic routes, hurry up and to see.
Reference:
Patent; Genentech, Inc.; Chan, Bryan; Drobnick, Joy; Gazzard, Lewis; Heffron, Timothy; Liang, Jun; Malhotra, Sushant; Mendonca, Rohan; Rajapaksa, Naomi; Stivala, Craig; Tellis, John; Wang, Weiru; Wei, BinQing; Zhou, Aihe; Cartwright, Matthew W.; Lainchbury, Michael; Gancia, Emanuela; Seward, Eileen; Madin, Andrew; Favor, David; Fong, Kin Chiu; Hu, Yonghan; Good, Andrew; US2018/282282; (2018); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics