反应详情

温度

50 °C

Into a 50-mL round-bottom flask, was placed a solution of methyl 3-(indolin-1-yl)-2-phenylquinoxaline-6-carboxylate (90 mg, 0.24 mmol, 1.00 equiv) in methanol (15 mL). Then a solution of sodium hydroxide (47.2 mg, 1.18 mmol, 5.00 equiv) in water (2 mL) was added. The resulting solution was stirred for 2 hrs at 50° C. in an oil bath. The resulting mixture was concentrated under vacuum. The residue was diluted in 20 mL of water. The pH value of the aqueous solution was adjusted to 4-5 with aqueous hydrogen chloride (1 mol/L). The resulting solids were collected by filtration. This resulted in 80 mg (92%) of 3-(indolin-1-yl)-2-phenylquinoxaline-6-carboxylic acid as an orange solid.

1. customInto a 50-mL round-bottom flask, was placed
2. concentrationThe resulting mixture was concentrated under vacuum
3. additionThe residue was diluted in 20 mL of water
4. filtrationThe resulting solids were collected by filtration
5. customThis resulted in 80 mg (92%) of 3-(indolin-1-yl)-2-phenylquinoxaline-6-carboxylic acid as an orange solid