反应详情

To a solution of 2-tert-butyl-4-fluorophenol (2.63 g, 15.7 mmol) and NEt3 (3.13 mL, 22.5 mmol) in dioxane (45 mL) was added methyl chloroformate (1.27 mL, 16.5 mmol). The mixture was stirred at room temperature for 1 h. The precipitate was removed via filtration. The filtrate was then diluted with water and extracted with ether. The ether extract was washed with water and dried over MgSO4. After removal of solvent, the residue was purified by column chromatography to give 2-tert-butyl-4-fluorophenyl methyl carbonate (2.08 g, 59%). 1H NMR (400 MHz, DMSO-d6) δ 7.24 (dd, J=8.8, 5.4 Hz, 1H), 7.17-7.10 (m, 2H), 3.86 (s, 3H), 1.29 (s, 9H).

1. customThe precipitate was removed via filtration
2. additionThe filtrate was then diluted with water
3. extractionextracted with ether
4. extractionThe ether extract
5. washwas washed with water
6. dry with materialdried over MgSO4
7. customAfter removal of solvent
8. customthe residue was purified by column chromatography