A novel boron trifluoride etherate mediated deep-seated rearrangement of an α,β-epoxyketone
作者:Adusumilli Srikrishna、Sripada S.V. Ramasastry
DOI:10.1016/j.tetasy.2005.07.030
日期:2005.9
of carvone epoxide 2 resulted in dimeric products 3 and 4, in contrast to the expected ring contraction product. Reaction of β-methylcarvone epoxides 8 and 11 with acids furnished 2-acetyl-4-isopropenylcyclopentanones 9 and 14 containing a stereodefined quaternary carbon atom. On the other hand, the reaction of epoxides 8 and 11 with borontrifluorideetherate lacks the stereoselectivity and in addition