Organolithium additions to styrene derivatives: Intramolecular alkylation processes
作者:Xudong Wei、Richard J.K. Taylor
DOI:10.1016/0040-4039(96)00797-6
日期:1996.6
2-Benzyloxystyrene undergoes efficient carbolithiation-protonation at −78°C. At higher temperatures, however, carbolithiation is followed by intramolecularalkylation to generate the corresponding 2-alkylphenol. 2-Alloxystyrenes are shown to undergo similar reactions.
Organolithium addition to styrene and styrene derivatives: scope and limitations
作者:Xudong Wei、Paul Johnson、Richard J. K. Taylor
DOI:10.1039/a910195k
日期:——
Styrene and a range of aryl-substituted styrenederivatives are shown to undergo efficient carbolithiation–trapping reactions in diethyl ether at −78 to −25 °C. The reactivities of different types of organolithium reagents were found to be: tertiary, secondary > primary; ≫ alkenyl, methyl, phenyl. Electron donating groups (e.g. methoxy and dialkylamino) at the ortho- or para- positions of the benzene