Water → HCID 21278901, compound

Participants

Reaction Steps

A solution of 4-fluorophenyl isocyanate (273 mg) in dioxane (5 ml) was added dropwise to a mixture of 5-chloro-3-[(4-amino-1-piperazinyl)carbonylmethyl]-2-benzothiazolinone hydrochloride (981 mg), triethylamine (273 mg), dioxane (40 ml) and water (2 ml) at room temperature. The resulting mixture was stirred for 2 hours and concentrated under reduced pressure. The residue was filtered, washed with water and ethyl acetate, and recrystallized from N,N-dimethylformamide to give 5-chloro-3-{[4-[N'-(4-fluorophenyl)ureido]-1-piperazinyl]carbonylmethyl}-2-benzothiazolinone (0.82 g).

Provenance & Evidence