反应详情

2-formylphenylboronic acid (3 g, 20.0 mmol) was added to solution of sodium hydroxide (850 mg, 1.05 eq) in 10 mL of water at 10° C. To this suspension was added nitromethane (1.1 mL, 1 eq) and then warmed to room temperature with stirring. After 30 minutes, the reaction was cooled in an ice bath and acidified with 3M HCl. A white precipitate was filtered and air dried to 3.2 g (82.9%) of 3-(nitromethyl)benzo[c][1,2]oxaborol-1(3H)-ol.

1. temperaturethe reaction was cooled in an ice bath
2. filtrationA white precipitate was filtered
3. dry with materialair dried to 3.2 g (82.9%) of 3-(nitromethyl)benzo[c][1,2]oxaborol-1(3H)-ol