Preparatively Useful Method for the Synthesis of Diels-Alder Adducts between Furan and Methyl Acrylate

Abstract
The Diels-Alder adducts of furan with methyl acrylate were successfully prepared by two methods on a preparative scale. The BF3·OEt2-catalyzed reaction of furan with methyl acrylate gave a 7:3 mixture of endo and exo adducts in 75.7% yield. When acryloyl chloride was used as a dienophile, after esterification with methanol, a 3:7 mixture of the same adducts was obtained in 76.5% overall yield.