反应详情

温度

2.5 °C

1-[Cyano(p-benzyloxyphenyl)methyl]cyclohexanol (50 g) was dissolved in tetrahydrofuran (300 ml) and sodium borohydride (30 g) was added at room temperature. Reaction mixture was cooled to 0-5° C. and charged with iodine solution drop wise (60 g) in 2.5 h. The reaction mass was stirred for 16 h at 25-30° C., filtered and washed with tetrahydrofuran (50 ml). The filtrate was cooled, DM water (500 ml) was added drop wise at 0-5° C. and tetrahydrofuran was distilled under reduced pressure at 40-45° C. to give residue. The residue was extracted with ethylacetate (250 ml×3), dried, concentrated, cooled and filtered to give 40 g (79.2%) of the 1-[2-amino-1-(4-benzyloxyphenyl)ethyl]-cyclohexanol.

1. customReaction mixture
2. filtrationfiltered
3. washwashed with tetrahydrofuran (50 ml)
4. temperatureThe filtrate was cooled
5. additionDM water (500 ml) was added drop wise at 0-5° C.
6. distillationtetrahydrofuran was distilled under reduced pressure at 40-45° C.
7. customto give residue
8. extractionThe residue was extracted with ethylacetate (250 ml×3)
9. customdried
10. concentrationconcentrated
11. temperaturecooled
12. filtrationfiltered