反应详情

3.0 g of 2-carboxymethyl-benzoic acid were dissolved in 16 ml of fuming nitric acid. 16 ml of ice water was added into the resulting solution after stirred at room temperature for 2 hr, then filtrated to obtain a precipitation, dried in vacuum to obtain 1.99 g of 5-nitro-2-carboxymethyl-benzoic acid.

1. filtrationfiltrated
2. customto obtain
3. customa precipitation
4. customdried in vacuum