A convenient approach to renewable hydroperoxides

2-(1-Hydroperoxyalkyl)-furans and 6-hydroperoxy-2H-pyran-3(6H)-ones are alternatively accessible by acid-catalyzed oxidation of 2-furyl alcohols with hydrogen peroxide under appropriate conditions. Representative compounds of both classes of hydroperoxides have been used, as easily renewable oxygen donors, in asymmetric sulfoxidation reactions.