Hydrochloric Acid → HCID 18426757, compound

Participants

Reaction Steps

To a solution of propylene oxide (0.07 ml, 1.04 mmol) in methylene chloride (10 ml) was added BBr3 (0.29 ml, 3.11 mmol) under ice-cooling, and the mixture was stirred for 30 minutes. To the mixture was added N-[1-butyl-2-oxo-4-[2-methoxy-5-{3-(diethylamino)-1-propynyl}phenyl]-1,2-dihydropyridin-3-yl]-N′-(2,6-diisopropylphenyl)- urea (303 mg, 0.518 mmol), and the mixture was stirred under reflux for 4 hours. To the reaction solution was added a 10% aqueous sodium hydroxide solution, and the mixture was acidified with 3 N hydrochloric acid. The mixture was extracted with chloroform, and the extract was washed with a saturated aqueous sodium chloride solution, and dried over magnesium sulfate. The solvent was evaporated under reduced pressure, and the resulting residue was purified by silica gel column chromatography (ethyl acetate: hexane=1:30) to give the title compound (77 mg, <26%) as colorless crystals.

Provenance & Evidence