反应详情

To a solution of 5.0 g (0.0515 mol) of 3-fluoropyridine and 43.5 ml of 1-(phenylmethyl)piperazine in 300 ml of anhydrous diethylether was added dropwise, at boiling temperature, within 2.5 hours, 56 ml (0.112 mol) of a 2 molar solution of phenyllithium in a cyclohexane-diethylether mixture (7/3 v/v) and the resulting mixture was then kept at reflux temperature for a further 4 hours. The crude reaction product obtained as an oil after working up in the usual way was purified by column chromatography over silica gel (30-60 μm) using FM1/cyclohexane (7/3 v/v)as eluant. 12.0 g (92% of theory) of a colourless oil were obtained, Rf0.52 (FM4; Macherey-Nagel, POLYGRAM® SIL G/UV254 Pre-coated plastic sheets for TLC)

1. temperatureat reflux temperature for a further 4 hours
2. customThe crude reaction product
3. customobtained as an oil
4. customwas purified by column chromatography over silica gel (30-60 μm)
5. custom12.0 g (92% of theory) of a colourless oil were obtained