%0 Journal Article %A Durán Peña, María Jesús %A Flores-Giubi, M. E. %A Botubol Ares, José Manuel %A M. Harwood, L. %A González Collado, Isidro %A Macías Sánchez, Antonio José %A Hernández Galán, Rosario %T Chemoselective and stereoselective lithium carbenoid mediated cyclopropanation of acyclic allylic alcohols %D 2016 %U http://hdl.handle.net/10498/20593 %X The reaction of geraniol with different lithium carbenoids generated from n-BuLi and the corresponding dihaloalkane has been evaluated. The reaction occurs in a chemo and stereoselective manner, which is consistent with a directing effect from the oxygen of the allylic moiety. Furthermore, a set of polyenes containing allylic hydroxyl or ether groups were chemoselectively and stereoselectively converted into the corresponding gem-dimethylcyclopropanes in one single step in moderate to good yields mediated by a lithium carbenoid generated in situ by the reaction of n-BuLi and 2,2-dibromopropane. %~ Universidad de Cádiz