Ethyl formate → HCID 178522216, compound

Participants

Reaction Steps

200 mg (0.6 mmol) of (Z)-3-[1-(4-aminophenylamino)-1-phenyl-methylidene]-2-indolinone and 5 ml of ethyl formate are stirred in 2.5 ml of DMF for 60 hours at 90° C. After removal of the solvent in vacuo ethyl acetate is added and the mixture is again concentrated by evaporation. The residue is stirred with ether, suction filtered and dried.

Provenance & Evidence