反应详情

To a solution of 12.4 g of 5-nitro-1H-indazole in 100 ml carbon tetrachloride were added 16.2 g of N-bromosuccinimide and 0.62 g of 2,2′-azobisisobutyronitrile, and the mixture was heated under reflux for 1 hour. The reaction mixture was cooled, and the resulting crystals were filtrated and washed with diethyl ether, to give 24.0 g of the title compound as a pale yellow powder.

1. temperaturethe mixture was heated
2. temperatureunder reflux for 1 hour
3. temperatureThe reaction mixture was cooled
4. filtrationthe resulting crystals were filtrated
5. washwashed with diethyl ether