反应详情

This compound was prepared in a similar manner to that for 404b except 1-bromobutane was deployed for the alkyl ether adduct and the partition step during workup utilized DCM (150 mL) and water (150 mL) to provide a yellow oil (2.0 g, 99%): TLC Rf 0.70 (20% EtOAc/hexanes). 1H NMR (600 MHz, CDCl3) δ 8.09-8.07 (d, 1H, J=8.88 Hz), 6.79-6.76 (m, 2H), 4.03-4.01 (t, 2H, J=6.48 Hz), 2.63 (s, 3H), 1.80-1.78 (quin, 2H, J=7.44 Hz), 1.53-1.47 (sex, 2H, J=7.44 Hz), 1.0-0.97 (t, 3H, J=7.38 Hz). 13C NMR (150 MHz, CDCl3) δ 162.7, 141.9, 137.1, 127.6, 117.9, 112.2, 68.3, 31.0, 21.8, 19.1, 13.8. Elemental analysis calculated for C11H15NO3: C, 63.14; H, 7.23; N, 6.69. Found: C, 63.25; H, 7.09; N, 6.69.