反应详情

According to the general method of Sharma et al., 2000, Synth. Commun., 30:397-405, a stirred solution of the 3-(phenylmethyl)salicylaldehyde (1.27 g, 6 mmol) in ethanol (16 ml) was treated dropwise with a solution of silver nitrate (2.0 g, 12 mmol) in water (16 ml). A solution of potassium hydroxide (2.69 g, 48 mmol) was then added dropwise over 40 minutes. The solution was allowed to stir at RT for 6 h. The mixture was filtered through a pad of celite, and the filter pad washed with water (2×10 ml). The filtrate was washed with diethyl ether (2×15 ml) and then acidified with 1N HCl. The milky suspension was extracted with diethyl ether (2×30 ml), and the combined extracts were dried (Na2SO4) and the solvent removed to yield 3-(phenylmethyl)salicylic acid as a tan solid (0.47 g, 34%). 1H-NMR (CDCl3, 400 MHz): δ 4.02 (s, 2H), 6.84 (t, 1H, J=8 Hz), 7.19-7.32 (m, 6H), 7.79 (d, 1H, J=8 Hz), 10.74 (s, 1H).

1. filtrationThe mixture was filtered through a pad of celite
2. washthe filter pad washed with water (2×10 ml)
3. washThe filtrate was washed with diethyl ether (2×15 ml)
4. extractionThe milky suspension was extracted with diethyl ether (2×30 ml)
5. dry with materialthe combined extracts were dried (Na2SO4)
6. customthe solvent removed