反应详情

1-(3-chloropropyl)-6-(3-thienyl)-1H-indazole 1-chloro-3-iodopropane (0.14 mL, 1.3 mmol) was added to a DMF (3 mL) solution of 6-(3-thienyl)-1H-indazole (88.4 mg, 0.44 mmol) and sodium hydride (60%, 72 mg, 1.8 mmol) that had been allowed to stir for 5 min at room temperature under argon. The reaction mixture was allowed to stir at room temperature overnight before quenching with brine (20 mL) and partitioning into ethyl acetate (100 mL), and drying over anhydrous sodium sulfate. The solvent was removed in vacuo and flash chromatography (silica gel, 10-20% ethyl acetate in hexane) yielded 1-(3-chloropropyl)-6-(3-thienyl)-1H-indazole (76.6 mg, 63%) as well as the side product 2-(3-chloropropyl)-6-(3-thienyl)-2H-indazole (33.9 mg, 28%).

1. stirringto stir at room temperature overnight
2. custombefore quenching with brine (20 mL)
3. custompartitioning into ethyl acetate (100 mL)
4. dry with materialdrying over anhydrous sodium sulfate
5. customThe solvent was removed in vacuo and flash chromatography (silica gel, 10-20% ethyl acetate in hexane)