Hydrochloric Acid → 2-[3-[4-(2-naphthamido)benzyl]-2-ethyl-1H-indol-1-yl]acetic acid

Participants

Reaction Steps

Into a dry reaction vessel, ethyl 2-[3-[4-(2-naphthamido)benzyl]-2-ethyl-1H-indol-1-yl]acetate (340 mg, 0.69 mmol), lithium hydroxide monohydrate (117 mg, 2.79 mmol), 5 mL tetrahydrofuran, 5 mL water were weighed, and stirred at room temperature for 2 h. The reaction was monitored to be complete by TLC, the system was added 10 mL water, and adjusted to pH=5 with 2 N HCl solution. A solid precipitated, it was pumping filtered, washed with dichloromethane to obtain the product as a light yellow solid 240 mg, at a yield of 75.2%.

Provenance & Evidence