Sulfuric Acid → HCID 90308837, compound

Participants

Reaction Steps

2-Methyl-2-propanol (5 mL) and concentrated sulfuric acid (0.1 mL) were added to 7-bromo-5-nitro-1H-indazole (484 mg), and the reaction solution was allowed to react in a microwave reactor at 100° C. for 1 hour. After dilution with ethyl acetate, the reaction solution was washed successively with an aqueous sodium bicarbonate solution and a saturated saline solution. After drying over anhydrous sodium sulfate, the solvent was evaporated under vacuum to obtain 7-bromo-2-(tert-butyl)-5-nitro-2H-indazole as a light yellow solid.

Provenance & Evidence