Arene-catalysed lithiation of phenyl- and 1,1-diphenylcyclopropane: synthetic applications
作者:Cecilia Gómez、Victor J. Lillo、Miguel Yus
DOI:10.1016/j.tet.2007.03.102
日期:2007.5
crowded ketones γ-products 11 are isolated, for aldehydes and non-congested ketones α-products 10 are formed. The application of the same protocol to 1,1-diphenylcyclopropane (7) leads to a mixture of products 13–15 resulting from the introduction of one or two electrophilic fragments to the open-chain mono- or dilithiated intermediate: also in this case the regiochemistry of the reaction is governed