Phosphorus pentachloride → HCID 13770502, compound

Participants

Reaction Conditions

Reaction Steps

To a suspension of 5.0 g. (16.1 mmoles) of 1-ethyl-5-(2-carboxybenzyloxy)oxindole in 100 ml. of methylene chloride was added 3.34 g. (16.1 mmoles) of phosphorous pentachloride and the reaction mixture allowed to stir 30 minutes at 25° C. The reaction mixture was cooled to --15° C. and 8.56 g. (64.4 mmoles) of aluminum chloride was added. The resulting mixture was allowed to stir at room temperature for 30 minutes and was then added to ice. The organic phase was separated, dried over magnesium sulfate and concentrated to give the desired product which was recrystallized from ethyl acetate-hexane, 2.3 g (69% yield), m.p. 186.5°-188.5° C.

Provenance & Evidence