2-[(Naphthalen-1-yl)methylidene]butanedioic acid → 3-[(Naphthalen-1-yl)methylidene]oxolane-2,5-dione

Participants

Reaction Steps

To 260 ml of acetic anhydride was added 15.20 g of 2-(1-naphthylmethylene)succinic acid, and the mixture was heated under reflux for 1 hour. The reaction mixture was evaporated under reduced pressure, and 100 ml of dry benzene was added to the residue. The precipitated crystals were collected by filtration to obtain 6.80 g of 2-(1-naphthylmethylene)succinic anhydride as orange yellow crystals.

Provenance & Evidence