Reference of 113808-86-9, 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. 113808-86-9, name is 3,5-Dimethylpyrazole-4-carboxylic Acid belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.
A mixture of 3,5-dimethyl-1H-pyrazole-4-carboxylic acid (9.6 mg, 0.069 mmol, Maybridge), piperidin-4-yl-benzothiazole (15 mg, 0.069 mmol, Compound 2h, Step 2), Hunig?s base (24 tL, 0.137 mmol) and HATU (39 mg, 0.103 mmol) was stirred overnight at room temperature in DMF (343 .iL). The reaction was purified directly by prep HPLC to give a pale yellow solid after freeze drying from dioxane (11.5 mg, 50 % yield). LCMS (ESI) m/z 341.4 (M+1) retention time 3.8 mm. ?HNMR (300MHz, CD3OD) oe = 7.95 (m, 2H), 7.50 (m, 1H), 7.44-7.38 (m, 1H), 3.55-3.41 (m, 1H), 3.3 1-3.01 (m, 2H), 2.50 (m, 2H),2.30 (s, 6H), 2.26-2. 12 (m, 2H), 1.95-1.78 (m, 2H).
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, 3,5-Dimethylpyrazole-4-carboxylic Acid, other downstream synthetic routes, hurry up and to see.
Reference:
Patent; THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA; HARTY, Ronald, N.; FREEDMAN, Bruce, D.; WROBEL, Jay, E.; REITZ, Allen, B.; LOUGHRAN, H., Marie; WO2015/153554; (2015); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics