Application of 42098-25-9, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 42098-25-9, name is 5-Chloro-1-methyl-4-nitro-1H-pyrazole belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.
Step C. tert-Butyl [1-(1-methyl-4-nitro-1H-pyrazol-5-yl)azepan-4-yl]carbamate A mixture of 5-chloro-1-methyl-4-nitro-1H-pyrazole (0.400 g, 2.48 mmol), tert-butyl azepan-4-yl carbamate (0.58 g, 2.7 mmol), EtOH (3 mL) and DIPEA (1.6 mL, 9.2 mmol) was irradiated in a microwave oven for 1 h at 130 C. The mixture was concentrated under reduced pressure and the residue was purified by column chromatography on silica gel using CombiFlash apparatus, eluting with EtOAc/hexane (10-60%). The purification gave 0.580 g (69.0% yield) of the sub-title compound as a colorless oil. LCMS calc. for C11H18N5O4 (M+H-t-Bu+H)+: m/z=284.2. found: 284.1.
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, 5-Chloro-1-methyl-4-nitro-1H-pyrazole, other downstream synthetic routes, hurry up and to see.
Reference:
Patent; INCYTE CORPORATION; Li, Yun-Long; Burns, David M.; Feng, Hao; Huang, Taisheng; Mei, Song; Pan, Jun; Vechorkin, Oleg; Ye, Hai-Fen; Zhu, Wenyu; Rafalski, Maria; Wang, Anlai; Xue, Chu-Biao; US2015/57265; (2015); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics