Diisopropylamine → HCID 67067427, compound

A solution of diisopropylamine (0.391 mL) in THF (10 mL) was stirred at −30° C. for 30 minutes. n-Butyl lithium (2.66 M solution in hexane, 1 mL) was added to the solution, and the reaction solution was stirred for one hour. Thereafter, the reaction solution was stirred at −78° C. for 30 minutes. Then, a solution of methyl (4-dimethylaminophenyl)acetate (468 mg) in THF (5 mL) was added dropwise to the solution, and the reaction solution was stirred at the same temperature for two hours. To the reaction solution was added 1-bromo-3-chloropropane at −78° C., and the reaction solution was stirred for one hour. Then, the reaction solution was stirred for 42 hours while gradually heating the solution to room temperature. Thereafter, ethyl acetate and saturated sodium bicarbonate water were added to the reaction solution, and the organic layer was separated. The resulting organic layer was washed with brine, dried over anhydrous magnesium sulfate and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (elution solvent: heptane+ethyl acetate) to obtain 174.7 mg of the title compound. The property values of the compound are as follows.

1. stirringThereafter, the reaction solution was stirred at −78° C. for 30 minutes
2. stirringthe reaction solution was stirred at the same temperature for two hours
3. stirringthe reaction solution was stirred for one hour
4. stirringThen, the reaction solution was stirred for 42 hours
5. customthe organic layer was separated
6. washThe resulting organic layer was washed with brine
7. dry with materialdried over anhydrous magnesium sulfate
8. concentrationconcentrated under reduced pressure
9. customThe residue was purified by silica gel column chromatography (elution solvent: heptane+ethyl acetate)

ORD record

ord-a83b50ced03b467681142782a2b78d12

Source dataset

uspto-grants-2011_07

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07973033B2