Water → (E)-2-(2-chloro-phenyl)-ethenesulfonic acid 4-bromo-2-chloro-benzoylamide

Participants

Reaction Steps

Sodium hydride (60% dispersion in mineral oil) (36 mg, 0.9 mmol) was added to a solution of (E)-2-(2-chloro-phenyl)-ethenesulfonic acid amide (65 mg, 0.3 mmol) in 1,4-dioxane (1.5 mL) and the reaction mixture was shaken for 30 minutes. Crude 4-bromo-2-chloro-benzoyl chloride (114 mg, 0.45 mmol) in dioxane (0.5 mL) was added and the reaction mixture was shaken at room temperature for 18 hours. Water (0.1 mL) was added to the reaction mixture and the whole was concentrated in vacuo. The resultant residue was purified by preparative HPLC under neutral conditions to give (E)-2-(2-chloro-phenyl)-ethenesulfonic acid 4-bromo-2-chloro-benzoylamide; sodium salt (38 mg, 29% yield).

Provenance & Evidence