Methanol → HCID 57455731, compound

Participants

Reaction Steps

990 mg (4.113 mmol) of N-[2-(4-chlorophenyl)-2-oxoethyl]-N′-ethylurea from Example 115A are suspended in 16 ml concentrated hydrochloric acid, treated with 16 ml of methanol and stirred for one hour at room temperature. The reaction mixture is evaporated to dryness, the residue extracted with dichloromethane, and the organic phase dried over sodium sulphate and again concentrated. The crude product is purified by flash chromatography on silica gel (eluent: dichloromethane/methanol 100:1, then 50:1) and 701 mg (77% of theory) of the target compound are thus obtained.

Provenance & Evidence