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. 180207-57-2, name is 2-(1H-Pyrazol-4-yl)ethanol belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below. COA of Formula: C5H8N2O
General procedure: To a mixture of 3,6-dichloropyridazine (3.73 g, 25 mmol), 4(5)-Hydroxymethylimidazole (1.96 g, 20 mmol), and Cs2CO3 (8.14 g, 25 mmol) was added acetonitrile (80 mL). The mixture was refluxed for 3 h and was poured into H2O (200 mL). 1N HCl(aq) was added slowly until the pH is ca. 7-8. Then the aqueous layer was extracted with EtOAc (150 mL) and then CH2Cl2 (100 mL x 5). The combined organic layer was dried (Na2SO4) and filtered. After removal of solvent, the product was triturated with 10% CH2Cl2/Et2O (30 mL x 3) to give 1.74 g of product. The filtrate was concentrated and was purified by column using 60-70-80% EtOAc/(CH2Cl2/hexane=1/1) as the eluent to give 629 mg of prouct. Total 2.36g of D (53%) was obtained.
The synthetic route of 180207-57-2 has been constantly updated, and we look forward to future research findings.
Reference:
Article; Yang, Shyh-Ming; Tang, Yuting; Rano, Thomas; Lu, Huajun; Kuo, Gee-Hong; Gaul, Michael D.; Li, Yaxin; Ho, George; Lang, Wensheng; Conway, James G.; Liang, Yin; Lenhard, James M.; Demarest, Keith T.; Murray, William V.; Bioorganic and Medicinal Chemistry Letters; vol. 24; 5; (2014); p. 1437 – 1441;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics