A mixture of tert-butyl 2-(4-(4-((4-chlorophenethyl)carbamoyl)phenoxy)-3-(aminomethyl)phenyl)acetate (0.015 g, 0.030 mmol), nicotinoyl chloride hydrochloride (0.007 g, 0.039 mmol), and triethylamine (0.013 ml, 0.091 mmol) in dichloromethane (1 ml) was stirred at ambient temperature for 1 hour. The reaction was loaded onto a silica gel sample and the product was eluted using a gradient system of 0.5% methanol/dichloromethane to 5% methanol/dichloromethane to provide tert-butyl 2-(4-(4-((4-chlorophenethyl)carbamoyl)phenoxy)-3-(nicotinamidomethyl)phenyl)acetate (0.005 g, 275%).
