Isobutylamine → N-tert-Butyl-3-((4-(4-(3-isobutylureido)-3-(trifluoromethoxy)benzoyl)piperazin-1-yl)methyl)benzamide

Participants

Reaction Steps

3-((4-(4-Amino-3-(trifluoromethoxy)benzoyl)piperazin-1-yl)methyl)—N-tert-butyl-benzamide (250 mg, 0.525 mmol) and 4-nitrophenol chloroformate (106 mg, 0.525 mmol) were combined and stirred in dichloromethane for 1 hour. Isobutylamine (0.115 g, 1.6 mmol, 0.156 mL) was added and the reaction mixture was stirred for 30 minutes. The reaction mixture was diluted with water and flushed through a hydrophobic frit. The organic phase was concentrated under vacuum and purified by basic reverse phase HPLC to afford the title compound (20 mg), MS (ESI) m/z 578.5 [M+H]+

Provenance & Evidence