Sodium Sulfite → 1-[2-(1-Adamantyl)ethyl]-3-[3-oxo-3-(4-pyridyl)propyl]-1-pentylurea

1,1,1-Triacetoxy-1,1-dihydro-1,2-benziodoxol-3(1H)-one (221 mg, 0.520 mmol) was added to a solution of 1-[2-(1-adamantyl)ethyl]-3-[3-hydroxy-3-(4-pyridyl)propyl]-1-pentylurea (100 mg, 0.234 mmol) in anhydrous dichloromethane (2 ml) under ice-cooling, the temperature was raised to room temperature, and the mixture was stirred for one hour. The reaction mixture was cooled with ice again, ethyl acetate (10 ml), a saturated aqueous sodium sulfite solution (5 ml) and a saturated aqueous sodium hydrogencarbonate solution (5 ml) were added to the reaction mixture, and the whole was stirred for 15 minutes. The reaction mixture was distributed with ethyl acetate (50 ml) and water (10 ml), and the organic layer was washed with a saturated aqueous sodium sulfite solution (5 ml), a saturated aqueous sodium hydrogencarbonate solution (5 ml) and a saturated aqueous sodium chloride solution (25 ml) successively. The organic layer was dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure to give 87.3 mg (87.8%) of the titled compound as colorless crystals.

1. temperaturecooling
2. temperatureThe reaction mixture was cooled with ice again
3. stirringthe whole was stirred for 15 minutes
4. washthe organic layer was washed with a saturated aqueous sodium sulfite solution (5 ml)
5. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
6. customthe solvent was evaporated under reduced pressure

ORD-Eintrag

ord-fe7252b065f6485fb1ff1e7a9e938a78

Quelldatensatz

uspto-grants-2008_03

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07345064B2