Nitric Acid → Methyl 2-hydroxy-3-nitrobenzoate

Participants

Reaction Steps

To a ice cold solution of salicylic acid (10 g, 0.072 mol) in methanol (100 mL), was added drop wise SOCl2 (12.8 g, 0.1 mol). After the addition, the mixture was warmed to room temperature and heated to reflux for 12 h. After reaction is completed the reaction mixture was cooled to room temperature and the excess methanol was evaporated under reduced pressure to obtain 9 g of methyl 2-hydroxybenzoate as a white solid. (81%). A solution of methyl 2-hydroxybenzoate (9 g, 0.059 mol) in glacial acetic acid (90 mL) was cooled to 15° C., fuming nitric acid (11.2 mL) was added drop wise. The reaction mixture was warmed to room temperature and stirred for 4 h. When the reaction is completed, the reaction mixture was poured into crushed ice. The precipitate was collected by filtration and washed several times with chilled water, then dried in a vacuum oven to the required product as a yellow coloured solid.

Provenance & Evidence