反应详情

To a solution of 1-hydroxybenzotriazole hydrate (5.4 g, 40 mmol), allyl amine (60 mmol), and 4-(trifluoromethoxy)benzoic acid (8.3 g, 40 mmol) in DMF (110 mL) was added 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide-HCl (11.5 g, 60 mmol) at R.T. After the reaction mixture was stirred for 2.5 hrs, the solution was partitioned between 10% citric acid and ether. The organic layer was washed with sat. aqueous sodium bicarbonate, dried (sodium sulfate), filtered, and concentrated. The residue was purified by silica gel chromatography (20% ether/hexanes) to yield the title compound (colorless solid 96%). 1H NMR (400 MHz, CDCl3) δ7.85 (d, J=7.1 Hz, 2 H, Ar), 7.28 (d, J=5.9 Hz, 2 H, Ar), 6.31 (s, 1 H, NH), 5.94 (m, 1 H, CH2CHCH2), 5.25 (dd,J=8.6, 7.1 Hz, 2 H, NHCH2CH), 4.10 (m, 2 H, CHCH2);

1. customthe solution was partitioned between 10% citric acid and ether
2. washThe organic layer was washed with sat. aqueous sodium bicarbonate
3. dry with materialdried (sodium sulfate)
4. filtrationfiltered
5. concentrationconcentrated
6. customThe residue was purified by silica gel chromatography (20% ether/hexanes)