p-(Trifluoromethoxy)phenyl isocyanate → 3,5-dichloro-4-(2-(N'-(4-trifluoromethoxyphenyl)ureido)ethoxy)-1-(3,3-dichloro-2-propenyloxy)benzene

Participants

Reaction Steps

A solution of 0.20 g of 3,5-dichloro-4-(2-aminoethoxy)-1-(3,3-dichloro-2-propenyloxy)benzene and 0.14 g of 4-trifluoromethoxyphenyl isocyanate dissolved in 10 ml of toluene was heated under reflux, while stirring, for 12 hours, and the reaction mixture was then concentrated to give a residue. The residue was subjected to silica gel chromatography, which afforded 0.15 g of 3,5-dichloro-4-(2-(N'-(4-trifluoromethoxyphenyl)ureido)ethoxy)-1-(3,3-dichloro-2-propenyloxy)benzene (46% yield), m.p., 125.4° C.

Provenance & Evidence