反应详情

10% Palladium on carbon (80 mg) was added to a suspension of methyl 4-benzyloxy-5-isopropyl-2-methoxybenzoate (624 mg, 1.99 mmol) in methanol (16 ml) and the mixture was stirred at room temperature under a hydrogen atmosphere for 3 hours. The mixture was filtered, the catalyst was rinsed with methanol (3×5 ml) and the combined filtrates were evaporated in vacuo to afford methyl 4-hydroxy-5-isopropyl-2-methoxybenzoate (432 mg, 97%) as an off-white solid. 1H NMR (DMSO-d6) 10.18 (1H, br s), 7.52 (1H, s), 6.52 (1H, s), 3.73 (3H, s), 3.71 (3H, s), 3.11 (1H, m), 1.14 (6H, d). MS: [M+Na]+ 247.

1. filtrationThe mixture was filtered
2. washthe catalyst was rinsed with methanol (3×5 ml)
3. customthe combined filtrates were evaporated in vacuo