Related Products of 25016-20-0, 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. 25016-20-0, name is 1-Methyl-1H-pyrazole-3-carboxylic acid belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.
Acid R2a (9.03 mg; 0.072 mmol) is dissolved in DMF (2 mL) and TEA (33.3 muIota 0.072 mmol) and TBTU (23.0 mg; 0.072 mmol) are added and the mixture is stirred for 15 mins. The Boc de-protected macrocyclic amine hydrochloride Ch is dissolved in DMF (1.0 mL) and added to the acid solution and stirred at RT overnight. The resulting solution is filtered through a Millex filter and purified by prep HPLC (ammonium bicarbonate/MeOH). The pure fractions are combined, concentrated, frozen and lyophilized to provide compound 1029.FIA M.S.(electrospray) : 858.3 (M-H)”, 860.2 (M+H)+ Retention time (min): 6.9 min1H NMR (400 MHz,DMSO-d6): delta 10.83 (s, 1H) , 8.93 (s, 1H), 7.90 (d, 1H, J= 9 Hz), 7.79 (d, 1H, J= 7Hz), 7.75 (d, 1H, J= 2.4 Hz), 7.16 (d, 1H, J= 9 Hz), ), 6.61 (s, 1H), 6.57 (d, 1H, J =2.3 Hz), 5.65-5.58 (m 1H), 5.52 (m, 1H), 5.20-5.04 (m, 3H), 4.61- 4.54 (m, 2H), 4.43-4.39 (m, 2H), 4.05-4.00 (m, 2H), 3.89 (d,6H, J = 5.8Hz), 2.67- 2.60 (m, 1H), 2.45 (s, 3H), 2.40-2.29 (m, 2H), 1.97-1.91 (m, 1H), 1.83-1.75 (m, 1H), 1.60-1.49 (m, 3H), 1.43-1.33 (m, 7H), 1.32-1.23 (m, 3H), 0.92-0.84 (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, 1-Methyl-1H-pyrazole-3-carboxylic acid, other downstream synthetic routes, hurry up and to see.
Reference:
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; LLINAS-BRUNET, Montse; BORDELEAU , Josee; GODBOUT, Cedrickx; LEBLANC, Melissa; MOREAU, Benoit; O’MEARA, Jeffrey; WO2011/63501; (2011); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics