Hydrochloric Acid → HCID 15578401, compound

Participants

Reaction Steps

A solution of ethyl 6-benzoyl-5-oxo-2,7-dioxabicyclo[4.1.0]-hept-3-ene-3-carboxylate (2.9 g) prepared as in Example 44, in dioxan (30 ml) and concentrated hydrochloric acid (10 mol) was heated under reflux for 2 hours. The solution was evaporated under vacuum and the solid residue was crystallised from ethyl acetate-petroleum ether 60°-80° C. and then from dioxan-water to give the title product (mp 216°-218° C. with decomposition).

Provenance & Evidence