Toluene → 3-(4-Methoxy-phenoxy)-propylamine

Temperature

80 °C

In an argon atmosphere, 3-(4-methoxyphenoxy)propionitrile (5.0 g) was dissolved in tetrahydrofuran (20 mL), and a borane-tetrahydrofuran complex (1.02 mol/L, 30.0 mL) was added dropwise to the resultant solution at 80° C. over 10 minutes. The mixture was stirred for 3 hours at 80° C. Thereafter, the reaction mixture was cooled to room temperature. Under cooling on ice, 4N aqueous sodium hydroxide solution (30 mL) was added thereto over 10 minutes. Ten minutes after, the mixture was stirred at room temperature for 5 minutes, and further stirred at 80° C. for 12 hours. The mixture was cooled to room temperature, and toluene (100 mL) was added thereto, followed by stirring for 1 hour. Subsequently, after removal of insoluble matter through filtration by means of Celite, the organic layer was collected and washed sequentially with water (100 mL×2) and saturated brine (100 mL), followed by drying over sodium sulfate anhydrate (80 g). After filtration, the filtrate was concentrated under reduced pressure, to thereby yield 4.0 g of a white solid (79.0%).

1. temperatureThereafter, the reaction mixture was cooled to room temperature
2. additionwas added
3. waitover 10 minutes
4. stirringTen minutes after, the mixture was stirred at room temperature for 5 minutes
5. stirringfurther stirred at 80° C. for 12 hours
6. temperatureThe mixture was cooled to room temperature
7. stirringby stirring for 1 hour
8. customSubsequently, after removal of insoluble matter
9. filtrationthrough filtration by means of Celite
10. customthe organic layer was collected
11. washwashed sequentially with water (100 mL×2) and saturated brine (100 mL)
12. dry with materialby drying over sodium sulfate anhydrate (80 g)
13. filtrationAfter filtration
14. concentrationthe filtrate was concentrated under reduced pressure

ORD record

ord-604123937f984733a2e283b010122cea

Source dataset

uspto-grants-2009_05

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07538242B2