Hydrochloric Acid → HCID 20273081, compound

Participants

Reaction Steps

5-Methoxycarbonylbenzofuran-3-(2H)one (4.9 g) was dissolved in warm dioxan (50 ml). 3-Carboxybenzaldehyde (4.5 g) was then added followed by concentrated hydrochloric acid (10 ml). The mixture was heated on a steam bath for 15 minutes with formation of yellow crystals. After cooling and addition of an equal volume of water, the crystalline product was filtered off and recrystallised from dimethylformamide to give the title compound, m.p. 280° C.

Provenance & Evidence