Propane, 1-chloro-3-isocyanato- → HCID 59625599, compound

Participants

Reaction Steps

tert-Butyl (3R,5S)-3-amino-5-{[(2-tert-butyl-4-{[3-(methylsulfanyl)propyl]amino}pyrimidin-5-yl)carbonyl](2-methylpropyl)amino}piperidine-1-carboxylate (97 mg) was dissolved in 1,2-dichloroethane (2 ml)-THF (2 ml), chloropropyl isocyanate (25 μl) was added, and the mixture was stirred at room temperature for 1 hr. Potassium tert-butoxide (30 mg) was added and the reaction mixture was stirred at room temperature for 8 hr, and further at 60° C. for 12 hr. The reaction mixture was diluted with water, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure. The residue was dissolved in THF (4 ml), sodium hydride (50% contained, 26 mg) was added under ice-cooling, and the mixture was stirred under ice-cooling for 4 hr. The reaction mixture was diluted with water, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure. The residue was subjected to silica gel column chromatography, eluted with ethyl acetate-methanol (100:0-90:10) and concentrated under reduced pressure to give the object compound (103 mg).

Provenance & Evidence