Reference of 82231-58-1, 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. 82231-58-1, name is Ethyl 2-(4-bromo-1H-pyrazol-1-yl)acetate belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.
To a solution of 4,4,5,5-tetramethyl- 2-(4,4,5,5-tetramethyl (1,3.2 – dioxaborolan-2-yl)) -1,3,2-dioxaborolane (436mg, 1.72mmol) in DMF (1OmL) at O0C were added KOAc (420mg, 4.29mmol) and Pd(dppf)Cl2.CH2Cl2 (35mg, 0.043mmol). The reaction mixture was heated to 8O0C at which point a solution of 27b (333mg, 1.43mmol) in DMF (1OmL) was added drop-wise. The resulting mixture was stirred at 8O0C overnight and evaporated to dryness. The residue was chromatographed on silica gel (ethyl acetate/petrol=l : 10) to provide 27c (76mg, 19%).
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, Ethyl 2-(4-bromo-1H-pyrazol-1-yl)acetate, other downstream synthetic routes, hurry up and to see.
Reference:
Patent; XCOVERY, INC.; WO2008/88881; (2008); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics