反应详情

To a solution of 2,6-dimethylbenzoic acid (10 g, 66.5 mmol) and potassium carbonate (9.18 g, 66.5 mmol) in dimethylformamide (67 ml), was added methyl iodide (8.28 ml, 133.16 mmol) in an ice bath, and the mixture was stirred for 16 hours. To the reaction mixture was added toluene and water, and the organic layer was washed with 3% K2CO3, 1N HCl, and brine. The organic layer was dried over Na2SO4, filtered and concentrated. The oily residue was redissolved in dry THF (135 ml), added to LiAlH4 (3.79 g, 99.8 mmol), and stirred for 4 hours in an ice bath. To the reaction mixture was added 1N HCl slowly followed by ethyl acetate, and the organic layer was washed with brine, dried over Na2SO4, filtered and concentrated. The oily residue was used without further purification.

1. washthe organic layer was washed with 3% K2CO3, 1N HCl, and brine
2. dry with materialThe organic layer was dried over Na2SO4
3. filtrationfiltered
4. concentrationconcentrated
5. dissolutionThe oily residue was redissolved in dry THF (135 ml)
6. stirringstirred for 4 hours in an ice bath
7. washthe organic layer was washed with brine
8. dry with materialdried over Na2SO4
9. filtrationfiltered
10. concentrationconcentrated
11. customThe oily residue was used without further purification