反应详情

A solution of (R)-tert-butyl 3-((R)-(cyanomethoxy)(5-fluoro-2-methylphenyl)methyl)piperidine-1-carboxylate (1.8 g, 0.005 mol) in anhydrous THF (20 ml) was heated to reflux under nitrogen. A solution of BH3.Me2S in THF was added dropwise and stirring was continued under reflux overnight. When the resulting solution was cooled to rt, MeOH was added dropwise to quench the reaction. After evaporation of the solution, the crude product was purified by column chromatography to afford (R)-tert-butyl 3-((R)-(2-aminoethoxy)(5-fluoro-2-methylphenyl)methyl)piperidine-1-carboxylate (1.2 g, yield 66%).

1. temperatureto reflux under nitrogen
2. temperatureunder reflux overnight
3. customto quench
4. customthe reaction
5. customAfter evaporation of the solution
6. customthe crude product was purified by column chromatography