4-Butylphenyl isocyanate → Ethyl 3-{3'-[3-(4-butylphenyl)-1-methylureido]biphenyl-4-yl}propanoate

Participants

Reaction Conditions

Reaction Steps

345 mg (1.5 mmol, 1.5 eq) of 1-butyl-4-isocyanatobenzene are added to 283 mg (1.0 mmol, 1 eq) of ethyl 3-(3′-methylaminobiphenyl-4-yl)propanoate (prepared in Example 7c). The reaction mixture is heated at 100° C. by microwave for 30 minutes. The mixture is chromatographed on silica gel (15 g FlashSmart column) eluted with 80/20 heptane/ethyl acetate. 442 mg of ethyl 3-{3′-[3-(4-butylphenyl)-1-methylureido]biphenyl-4-yl}propanoate are obtained in the form of a yellow oil that crystallizes. Yield=96%

Provenance & Evidence