反应详情

methyl 2-(benzyloxycarbonylamino)acrylate (2.05 g, 0.0095 mol, 1 eq.), 1-bromobicyclo[2.2.2]octane (1.8 g, 0.0095 mol, 1 eq.) and AIBN (0.312 g, 0.0019 mol, 0.2 eq.) were dissolved in benzene (30 mL) and heated to reflux. Bu3SnH (5.53 g, 0.019 mol, 2 eq.) was then added. The resulting mixture was stirred at reflux for 14 hrs. The solvent was removed and the residue was purified via preparative TLC (EtOAc/Petroleum ether=1:9) to give methyl 2-(benzyloxycarbonylamino)-3-(bicyclo[2.2.2]octan-1-yl)propanoate (480 mg, 15%) as a foam. 1H NMR (CDCl3, 400 MHz) δ 7.35 (m, 5H), 5.13 (m, 2H), 4.42 (m, 1H), 3.73 (s, 3H), 1.8-1.1 (m, 15H), 1.28 (m, 1H).

1. temperatureheated to reflux
2. temperatureat reflux for 14 hrs
3. customThe solvent was removed
4. customthe residue was purified via preparative TLC (EtOAc/Petroleum ether=1:9)