Sodium ethoxide → HCID 21106514, compound

Participants

Reaction Steps

1.74 g 2-(2-Chloro-4-trifluoromethyl-phenylamino)-isoindole-1,3-dione (prepared from 2-chloro-4-trifluoromethyl-phenylhydrazine analogously to method A) in 80 ml dry ethanol were treated with 347 mg sodium ethoxide and the mixture was stirred at 85 C for 2 hrs. After cooling, the mixture was evaporated and dissolved in water. Precipitate was filtered off and washed several times with water. The combined filtrates was acidified by addition of conc. HCl whereupon the product precipitated. It was isolated by filtration and purified by chromatography on silica eluting with a gradient from heptane/ethyl acetate (50:50) to pure ethyl acetate. Yield 250 mg (14%)

Provenance & Evidence