反应详情

The compound was prepared according to general procedure E. To a solution of p-toluidine (4.7 mmol) in dry acetone (20 ml), ethylbromoacetate (4.7 mmol) was added. The mixture was refluxed for 3 hours. After cooling, the solvent was removed under reduced pressure. The residue was chromatogaphed on a silica gel column (dichloromethane/ethyl acetate 9/1 as eluent) to give 326 mg of ethyl 2-(p-tolylamino)acetate (yield 36%). 1H NMR (500 MHz, CDCl3): δ 1.29 (t, J=7.4 Hz, 3H), 2.28 (s, 3H), 3.90 (s, 2H), 4.26 (q, J=7.4 Hz, 2H), 6.58 (d, J=8.2 Hz, 2H), 7.05 (d, J=8.2, 2H) 13C NMR (126 MHz, CDCl3): δ 15.6, 21.8, 47.7, 62.5, 114.8, 131.2, 146.3, 172.8. MS (ESI): m/z 193.9 [M+H]+

1. customThe compound was prepared
2. temperatureThe mixture was refluxed for 3 hours
3. temperatureAfter cooling
4. customthe solvent was removed under reduced pressure