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

Participants

Reaction Steps

A mixture of 7.6 g of 2-(1-naphthylmethylene)succinic acid obtained and 130 ml of acetic anhydride was heated under reflux for 1 hour. The reaction mixture was concentrated under reduced pressure, and 50 ml of benzene was added to the residue. The precipitated crystals were collected by filtration to obtain 3.4 g of 2-(1-naphthylmethylene)succinic anhydride as orange yellow crystals.

Provenance & Evidence