Electric Literature of 25016-16-4, 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. 25016-16-4, name is 1-(1H-Pyrazol-4-yl)ethanone belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.
Step 1. 1-(1-((6-(trifluoromethyl)pyridin-3-yl)methyl)-1H-pyrazol-4-yl)ethan-1-one Sodium hydride (60% oil dispersion; 800 mg, 20 mmol) was added to a cooled (0 C.) solution of 1-(1H-pyrazol-4-yl)ethanone (2 g, 18.2 mmol) in DMF (20 ml) and stirred for 1 hour at 0 C. 5-(Chloromethyl)-2-(trifluoromethyl)pyridine (3.91 g, 20 mmol) was added to the reaction and allowed to warm to room temperature overnight. The reaction mixture was poured into ice water and extracted with ethyl acetate (3*75 ml). The combined organic extracts were dried over magnesium sulfate, filtered, and evaporated in vacuo. The crude product was purified by column chromatography (SiO2) eluting with a gradient of 0-5% methanol in dichloromethane. The desired fractions were evaporated to afford the title product as a yellow solid. ESMS(M+1)=270.14.
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-(1H-Pyrazol-4-yl)ethanone, other downstream synthetic routes, hurry up and to see.