反应详情

2.0 g (6.1 mmol) of (Z)-3-[1-(3-aminophenylamino)-1-phenyl-methylidene]-2-indolinone and 1.0 g (23.7 mmol) of cyanamide are dissolved in 100 ml of ethanol and 10 ml of ethereal hydrochloric acid and heated for 24 hours in a glass bomb at 80° C. The solvent is distilled off. Chromatography of the residue on silica gel (ethyl acetate/methanol/glacial acetic acid/water=17:3:5:5) yields the product.

1. distillationThe solvent is distilled off
2. customChromatography of the residue on silica gel (ethyl acetate/methanol/glacial acetic acid/water=17:3:5:5) yields the product