反应详情

To a mixture of 5-fluoro-2-(4-fluorobenzyloxy)pyrimidin-4-ylamine (0.235 g, 0.99 mmol), N-methyl morpholine on polystyrene (0.538 g, 1.24 mmol), and CH2Cl2 (5 mL) was added chloro-oxo-acetic acid ethyl ester (0.135 g, 0.99 mmol) and the resulting mixture was agitated on an orbital shaker for 16 h. The reaction contents were filtered onto an acidic SPE cartridge and eluted with CH2Cl2. The CH2Cl2 filtrate was evaporated to give 0.165 g (50%) of N-[5-fluoro-2-(4-fluorobenzyloxy)pyrimidin-4-yl]oxalamic acid ethyl ester as a clear oil: 1H NMR (300 MHz, CDCl3) δ 9.21 (bs, 1H), 8.38 (d, J=2.3 Hz, 1H), 7.48 (m, 2H), 7.03 (t, J=8.5 Hz, 2H), 5.40 (s, 2H), 4.48 (q, J=7.1 Hz, 2H), 1.45 (t, J=7.1 Hz, 3H); HPLC-MS (ESI) m/z 338 (M+H)+.

1. customThe reaction contents
2. filtrationwere filtered onto an acidic SPE cartridge
3. washeluted with CH2Cl2
4. customThe CH2Cl2 filtrate was evaporated