Nitric Acid → HCID 68288276, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred mixture of 2-ethyl-4-methylbenzoic acid (compound 48.2, 2 g, 12.18 mmol, 1.00 equiv) in sulfuric acid (30 mL) at −10° C. was added dropwise a solution of nitric acid (1.6 g, 16.50 mmol, 2.08 equiv) in sulfuric acid (10 mL). After stirring for 30 min at −10° C., 200 mL of H2O/ice was carefully added and the resulting mixture was extracted with 50 mL of ethyl acetate. The organic phase was washed with 2×50 mL of brine, dried over sodium sulfate, and concentrated under reduced pressure. The crude product was purified by re-crystallization from ethyl acetate/petroleum ether in the ratio 1:10 to yield 1.0 g (37%) of 2-ethyl-4-methyl-5-nitrobenzoic acid as a light-yellow solid.

Provenance & Evidence