反应详情

温度

0 °C

Methyl 2-hydroxy-3-methylbenzoate (Reference Compound No. 1-4-(1), 22.9 g, 0.138 mol) was dissolved in trifluoroacetic acid (190 mL), then an aqueous solution (90 mL) of sodium nitrate (12.9 g, 152 mmol) was added dropwise thereto over 1 hour at −10° C. After the reaction mixture was stirred at 0° C. for 1.5 hours, it was poured into ice-water (600 mL). The appeared solid was filtered and washed with methanol (100 mL) to give the titled reference compound (18.7 g) as a pale red solid. (Yield 64%)

1. filtrationThe appeared solid was filtered
2. washwashed with methanol (100 mL)