1,2-Dichloroethane → HCID 9838248, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 1-tert-butoxycarbonylamino-4-methylcyclohex-3-ene (0.18 g) in a mixture of anisole (0.18 ml) and dichloromethane (0.36 ml) was added trifluoroacetic acid (0.54 ml) at 0° C. and the mixture was allowed to stir at 0° C. for 1 hour. Evaporation gave a residue, which was taken up into 1,2-dichloroethane (5 ml). To the mixture were added triethylamine (0.6 ml) and 4-phenoxycarbonylaminopyridine (0.183 g), and the resultant mixture was heated to 75° C. for 6 hours. Evaporation gave a residue, which was chromatographed on silica gel (50 ml) eluting with 7% methanol in dichloromethane, and taken up into a solution of hydrogen chloride in ethyl acetate (4N, 2 ml). Evaporation under reduced pressure and trituration with diisopropyl ether gave N-(4-methylcyclohex-3-en-1-yl)-N′-(pyridin-4-yl)urea hydrochloride (0.144 g).

Provenance & Evidence