Triethylamine → 2'-Chloro-5'-(3-cyclohexyl-ureido)-biphenyl-4-carboxylic acid ethyl ester

Participants

Reaction Steps

A mixture of 5′-amino-2′-chloro-biphenyl-4-carboxylic acid ethyl ester (350 mg) and cyclohexyl isocyanate (0.32 ml) in dry THF (15 ml) containing triethylamine (0.62 ml) was stirred at room temp for 48 h. The mixture was then evaporated and the residue partitioned between water and DCM. The dried extracts were evaporated giving the crude title compound as a white solid (616 mg, >100%, contaminated with dicyclohexyl-urea)

Provenance & Evidence