Unexpected acid-catalysed rearrangement of a vinylcyclopropane derivative
Abstract
A vinylcyclopropane carboxylic acid derivative undergoes a novel type of rearrangement under mild acidic conditions; X-ray diffraction study of the rearrangement product confirms the structure as (1SR,4SR,7SR)-4-methyl-3,9-dioxabicyclo[5.3.0]dec-5-ene-2,10-dione.