反应详情

To a solution of 42 (0.80 g, 2.52 mmol) in THF (10 mL) at ambient temperature was added methylamine solution (2.0 M in THF, 3.78 mL, 7.56 mmol). The reaction mixture was stirred for 4 h before NaBH4 (0.44 g, 11.49) was added. The reaction mixture was stirred for 3 h before being quenched by a saturated solution of NH4Cl (10 mL). The product was extracted with diethyl ether, dried and concentrated. The residue was purified by silica gel column chromatography (ethyl acetate/hexane/0.1% DEA=1 :7 to 1:5) to give (4S)-4-(3,4-dichlorophenyl)-2-(1-(methylamino)ethyl)-1,2,3,4-tetrahydronaphthalen-1-ol (44) (493 mg, 56%).

1. additionwas added
2. custombefore being quenched by a saturated solution of NH4Cl (10 mL)
3. extractionThe product was extracted with diethyl ether
4. customdried
5. concentrationconcentrated
6. customThe residue was purified by silica gel column chromatography (ethyl acetate/hexane/0.1% DEA=1 :7 to 1:5)