反应详情

N-Ethyl-1-benzyl-4-piperidinyl carboxamide (EXAMPLE 174, 8.03 g, 32.60 mmol) is dissolved in THF and cooled to 0°. Lithium aluminum hydride (1M in THF) is added dropwise. The solution is refluxed 4.5 hr, then quenched at 0° by adding 1.24 ml water, 1.24 ml 15% aqueous sodium hydride, and 3.71 ml water. Filtration through a pad of diatomaceous earth and sodium sulfate and then evaporation of the solvent gives the title compound; NMR (300 MHz, CDCl3) 7.14, 3.32, 2.73, 2.50, 2.35, 1.79, 1.55, 1.34, 1.12 and 0.97δ.

1. temperaturecooled to 0°
2. temperatureThe solution is refluxed 4.5 hr
3. customquenched at 0°
4. additionby adding 1.24 ml water, 1.24 ml 15% aqueous sodium hydride, and 3.71 ml water
5. filtrationFiltration through a pad of diatomaceous earth and sodium sulfate
6. customevaporation of the solvent