反应详情

To a solution of 4-benzyl-6-(4-bromo-phenyl)-morpholin-3-one (21.3 g; 62 mmol) in THF (350 mL) was added BH3.THF in THF (1M, 155 mL; 155 mmol) dropwise, at 0° C. After 1 hour the mixture was allowed to warm to RT and stirred for another 2 hours. To the reaction mixture was added MeOH (300 mL), at 0° C., the resulting mixture was stirred at RT for 3 days, and subsequently concentrated in vacuo. The residue was partitioned between EtOAc and 1 M aqueous NaOH-solution. The organic layer was dried (Na2SO4), filtered, and concentrated in vacuo to afford 4-benzyl-2-(4-bromo-phenyl)-morpholine (20.1 g), which was used as such in the next step.

1. customat 0° C
2. stirringat 0° C., the resulting mixture was stirred at RT for 3 days
3. concentrationsubsequently concentrated in vacuo
4. customThe residue was partitioned between EtOAc and 1 M aqueous NaOH-solution
5. dry with materialThe organic layer was dried (Na2SO4)
6. filtrationfiltered
7. concentrationconcentrated in vacuo