A New Method for the Synthesis of 3,5-Disubstituted 2(5H)-Furanones. Synthesis of (±)-Acarenoic Acid

Abstract
Heating of 3,5-disubstituted 4-bromo-3-methoxycarbonyldihydro-2(3H)-furanones with NaI in 3-pentanone gave 3,5-disubstituted 2(5H)-furanones in 55.8–93.3% isolated yields. A total synthesis of (±)-acarenoic acid was established in 33% overall yield via 4 steps.