Acetic Anhydride → 1-(3-((4-nitro-1H-indazol-1-yl)methyl)piperidin-1-yl)ethanone

Participants

Reaction Steps

A solution of 4-nitro-1-(piperidin-3-ylmethyl)-1H-indazole (0.050 g, 0.139 mmol), triethylamine (0.097 mL, 0.699 mmol) in DCM (1 mL) was treated with acetic anhydride (0.0158 mL, 0.168 mmol) at ambient temperature and stirring continued for 1 hour. The mixture was quenched with saturated aqueous sodium bicarbonate, extracted with DCM, dried (phase separator silicone treated filter paper) and concentrated to provide 1-(3-((4-nitro-1H-indazol-1-yl)methyl)piperidin-1-yl)ethanone (0.022 g, 52% yield) as a yellow oil.

Provenance & Evidence