Preparation of Some 5-Substituted 2-Oxo-2,5-dihydrofurans from 2-Acetoxyfuran.

Abstract

2-Acetoxyfuran has been found to react (1) with bromine to give 2-oxo-5-bromo-2,5-dihydrofuran and acetyl bromide, (2) with chlorine to give 2-oxo-5-chloro-2,5-dihydrofuran and acetyl chloride, and (3) with lead tetraacetate to give 2-oxo-5-acetoxy-2,5-dihydrofuran. The dihydrofurans could be hydrolyzed to cis-beta-formylacrylic acid.