反应详情

温度

40 °C

A round bottom flask was charged with ethyl 4-pivaloylbenzoate (7.67 g, 32.7 mmol), THF (100 mL) and MeOH (100 mL). Sodium hydroxide 1N, aq. (65.5 mL, 65.5 mmol) was then added in one portion. Reaction stirred at 40° C. for 1 hour. Organic solvent removed under reduced pressure and water (150 mL) added to the flask. Acidification with HCl 1N aq. to ca. pH 1 followed by filtration of the solid formed over a büchner funnel provide 4-pivaloylbenzoic acid as a light yellow solid (9.25 g). 1H NMR (400 MHz, DMSO-d6) δ 1.25-1.27 (m, 9H) 7.70-7.74 (m, 2H) 7.97-8.01 (m, 2H) 13.00 (br. s., 1H); MS (M−1): 205.3.

1. customReaction
2. customOrganic solvent removed under reduced pressure and water (150 mL)
3. additionadded to the flask
4. filtrationAcidification with HCl 1N aq. to ca. pH 1 followed by filtration of the solid
5. customformed over a büchner funnel