反应详情

1-(5-Fluoro-2-pyrimidinyl)-4-piperidinecarbaldehyde (0.96 g, 60%) was prepared as a white solid from [1-(5-fluoro-2-pyrimidinyl)-4-piperidinyl]methanol (prepared as in Example 152, Step 1, 1.62 g, 7.67 mmol) and PCC (pyridinium chlorochromate, 2.53 g, 11.50 mmol) in CH2Cl2 (36 mL) in a manner similar to Example 146, Step 1. The crude product was purified by chromatography on an ISCO silica gel column using 0 to 20% EtOAc/hexanes to give 1-(5-fluoro-2-pyrimidinyl)-4-piperidinecarbaldehyde as a white solid. 1H NMR (400 MHz, CDCl3): δ 9.68 (s, 1H), 8.20 (s, 2H), 4.55-4.45 (m, 2H), 3.25-3.10 (m, 2H), 2.60-2.45 (m, 1H), 2.05-1.90 (m, 2H), 1.70-1.55 (m, 2H); LRMS (ESI), m/z 210 (M+H).

1. customThe crude product was purified by chromatography on an ISCO silica gel column