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. 3528-45-8, name is 1-(4-Methoxybenzyl)-1H-pyrazol-5-amine belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below. name: 1-(4-Methoxybenzyl)-1H-pyrazol-5-amine
In a stirred solution of 1a (15.0 g, 74 mmol) and diethyl acetylmalonate (15.0 g, 74 mmol), in POCI3 (110 mL) at O0C, a stream of dry HCI gas is passed over the solution for a period of about 15 min. The reaction mixture is gradually warmed to RT, stirred for about 2 h and then heated to 60 0C for about 4 h. POCI3 is distilled under reduced pressure. The reaction mixture is quenched with ice and extracted with EtOAc (3 x 75 mL). The combined organic layers are washed with water, brine, dried over anhydrous Na2SO4 and concentrated under reduced pressure. The pure intermediate 1b (9.0 g, 31.5% yield) is isolated as a yellow oil by flash chromatography with Petroleum ethenEtOAc (85:15 v/v).
The synthetic route of 3528-45-8 has been constantly updated, and we look forward to future research findings.