反应详情

To a solution of ethyl 4-methylpiperidine-4-carboxylate hydrochloride (0.08 g, 0.48 mmol) in EtOH (5.0 mL) was added DIPEA (0.22 mL, 1.20 mmol) at rt and the mixture stirred at rt for 10 minutes followed by addition of 5-bromo-2-(bromomethyl)pyrimidine (0.10 g, 0.40 mmol). The reaction was heated up to 70° C. for 1 h. After completion of reaction (by TLC), solvent was evaporated and the crude residue purified over 100-200 M silica-gel using 20% EtOAc:hexane to obtain the desired product as a yellow solid (0.10 g, 73% yield). 1H NMR (DMSO-d6): δ 1.09 (s, 3H), 1.13 (t, J=7.20 Hz, 3H), 1.45 (m, 2H), 2.00 (m, 2H), 3.12 (m, 2H), 3.32 (m, 2H), 3.62 (q, J=7.20 Hz, 2H), 4.08 (m, 2H) and 8.94 (s, 2H).

1. temperatureThe reaction was heated up to 70° C. for 1 h
2. customAfter completion of reaction (by TLC), solvent
3. customwas evaporated
4. customthe crude residue purified over 100-200 M silica-gel