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

Participants

Reaction Steps

A mixture of 24.5 g of the 2-(1-naphthylmethylene)succinic acid obtained and 260 ml of acetic anhydride was heated for 60 minutes at 60° C. The reaction mixture was evaporated under reduced pressure, and to the residue was added a mixture of benzene and hexane (1:1). Precipitated crystals were collected by filtration to obtain 16.0 g of 2-(1-naphthylmethylene)succinic anhydride as orange yellow crystals.

Provenance & Evidence