反应详情

Following the general procedure for Intermediate 2 using 4-fluoro-3-nitro-N,N-bis(2,2,2-trifluoroethyl)benzamide (213 mg, 0.612 mmol) and tert-butyl 3-(aminomethyl)morpholine-4-carboxylate (160 mg, 0.734 mmol) in 10 mL of EtOH containing TEA (0.130 mL, 0.918 mmol). The product was purified by flash chromatography on silica gel using 2:1/hexanes:EtOAc as eluent. Yield: 304 mg (91%); 1H NMR (400 MHz, CHLOROFORM-D) δ 1.49 (s, 9H), 3.17 (m, 1H), 3.52 (m, 1H), 3.64 (m, 3H), 3.92 (m, 2H), 4.25 (q, J=8.20 Hz, 6H), 7.57 (d, J=8.59 Hz, 1H), 8.30 (d, J=1.95 Hz, 1H), 8.48 (m, 1H); MS (ESI) 544.75 (MH+).

1. customThe product was purified by flash chromatography on silica gel using 2:1/hexanes