Diisopropylethylamine → HCID 86618150, compound

Participants

Reaction Steps

To a solution of tert-butyl (1R,3R,4S)-3-acetamido-4-((S)-3-amino-2-oxopyrrolidin-1-yl)cyclohexylcarbamate (˜3.4 mmol) in isopropanol (10 mL) was added 4-chloro-6-(trifluoromethyl)quinazoline (0.97 g, 1.2 eq) and diisopropylethylamine (0.88 g, 2 eq). The mixture was stirred at room temperature for 2.5 h. The solvent was removed under reduced pressure. The residue was purified with silica gel column chromatography eluting with 1% and 5% MeOH in dichloromethane to provide tert-butyl (1R,3R,4S)-3-acetamido-4-((S)-2-oxo-3-(6-(trifluoromethyl)quinazolin-4-ylamino)pyrrolidin-1-yl)cyclohexylcarbamate (2.0 g, ˜100%). LC/MS found [M+H]+=551.

Provenance & Evidence