Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 25222-43-9, name is (1H-Pyrazol-4-yl)methanol, This compound has unique chemical properties. The synthetic route is as follows., 25222-43-9
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 10percent CH2Cl2/Et2O (30 mL x 3) to give 1.74 g of product. The filtrate was concentrated and was purified by column using 60-70-80percent EtOAc/(CH2Cl2/hexane=1/1) as the eluent to give 629 mg of prouct. Total 2.36g of D (53percent) was obtained.
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