Phosphorus pentachloride → HCID 68844946, compound

Participants

Reaction Conditions

Reaction Steps

A suspension of 11.4 g of 1-acetyl-3-(1-hydroxy-1-(4-acetylamino-3-nitro-phenyl)methylene)-2-indolinone (educt VII.21) and 9.37 g of phosphorus pentachloride in 200 ml dioxane is stirred for 4 hours at 100° C. After the addition of a further 2.0 g of phosphorus pentachloride the mixture is stirred for a further 3 hours at 100° C. Then the solvent is distilled off, the residue is stirred with 100 ml of ethyl acetate, suction filtered, washed with ethyl acetate and dried at 60° C.

Provenance & Evidence