Application of 25016-12-0, 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. 25016-12-0, name is 1,3-Dimethyl-1H-pyrazole-4-carbaldehyde belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.
[0242] Bis(2-methoxyethyl)aminosulfurtrifluoride (3.71 ml, 20.14 mmol)was added to a stirred solution of l,3-dimethyl-lH-pyrazole-4-carbaldehyde (500 mg, 4.03 mmol) in DCM (6 ml) at 0 C. Then the mixture was stirred at room temperature for overnight. The reaction was quenched by NaHC03 solution (20 ml), extracted with dichloromethane (3 x lOmL). The combined organic fractions were washed with brine (3 x 10 ml), dried with Na2S04, filtered and concentrated under reduced pressure. The residue was purified by preparative HPLC reverse phase (C-8), eluting with (MeCN/H20=2/l), to give 4-(difluoromethyl)-l,3-dimethyl-lH- pyrazole as an oil. LC/MS = 147 [M+l].
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, 1,3-Dimethyl-1H-pyrazole-4-carbaldehyde, other downstream synthetic routes, hurry up and to see.
Reference:
Patent; MERCK SHARP & DOHME CORP.; KUANG, Rongze; TING, Pauline; ALI, Amjad; WU, Heping; BERLIN, Michael; STAMFORD, Andrew; WANG, Hongwu; ZHOU, Gang; KIM, David; DENG, Qiaolin; LIM, Yeon-Hee; YU, Younong; (201 pag.)WO2016/81290; (2016); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics