Phosphorus pentachloride → HCID 68677101, compound

Participants

Reaction Conditions

Reaction Steps

A suspension of 7.0 g of 1-acetyl-3-[1-hydroxy-1-(4-cyanophenyl)methylene]-6-chloro-2-indolinone (starting material VI.18) and 6.39 g of phosphorus pentachloride in 150 ml of dioxane is stirred at 100° C. for 6 hours. After addition of a further 1.0 g of phosphorus pentachloride, the mixture is stirred at 110° C. for another 4 hours. The solvent is then distilled off and the residue is washed with ethyl acetate.

Provenance & Evidence