RT journal article T1 Chemoselective and stereoselective lithium carbenoid mediated cyclopropanation of acyclic allylic alcohols A1 Durán Peña, María Jesús A1 Flores-Giubi, M. E. A1 Botubol Ares, José Manuel A1 M. Harwood, L. A1 González Collado, Isidro A1 Macías Sánchez, Antonio José A1 Hernández Galán, Rosario A2 Química Orgánica AB 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. PB The Royal Society of Chemistry YR 2016 FD 2016 LK http://hdl.handle.net/10498/20593 UL http://hdl.handle.net/10498/20593 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 07-nov-2026