反应详情

温度

0 °C

To a stirred solution of 1M lithium aluminum hydride in THF (1.52 mL, 1.52 mmol) at 0° C. was added methyl 4-{3-[4-(biphenyl-2-ylcarbamoyloxy)piperidin-1-yl]propionylamino}-2,5-dimethylbenzoate (400 mg, 0.76 mmol). The resulting mixture was stirred at 0° C. for 30 minutes and then a 1:1 mixture of 1M aqueous sodium hydroxide (5 mL) and water (5 mL) was added and stirring was continued for 2 hours. Dichloromethane was added and the organic layer was separated, dried over sodium sulfate and the solvent removed under reduced pressure. The residue was purified by silica gel chromatography eluting with dichloromethane containing 5% methanol to provide biphenyl-2-ylcarbamic acid 1-[2-(4-hydroxymethyl-2,5-dimethylphenylcarbamoyl)-ethyl]piperidin-4-yl ester. LCMS (10-70) Rt=3.94; [M+H+] found 502.5.

1. additionwas added
2. stirringstirring
3. waitwas continued for 2 hours
4. customthe organic layer was separated
5. dry with materialdried over sodium sulfate
6. customthe solvent removed under reduced pressure
7. customThe residue was purified by silica gel chromatography
8. washeluting with dichloromethane containing 5% methanol