Rearrangement of α-hydroxycyclobutanes. Unusual rearrangement of some cyclobutachromanols to a component of the ring system of averufin
Abstract
Acid-catalysed rearrangement of Cyclobutachromanols 4 and 5 furnishes the benzo-1,3-dioxane compounds 6 and 7, respectively, arising from a de Mayo-type rearrangement.