The carbonylative skeleton rearrangement of 1,4 enynes tethered by a cyclopropane group proceeded smoothly in the presence of [Rh(CO)2Cl]2 under CO atmosphere to give the corresponding 1,2,4,5,6,7-hexahydrocyclopenta[a]inden-3(3bH)-one derivatives in moderate yields.
Key words
rhodium(I) - carbonylation - skeleton rearrangement - 1,4-enyne - cyclopropane