β-Functionalised organolithium compounds through a sulfur-lithium exchange
作者:Francisco Foubelo、Ana Gutiérrez、Miguel Yus
DOI:10.1016/s0040-4039(97)01008-3
日期:1997.7
The successive reaction of different β-hydroxy or β-amino thioethers 1a-d with n-butyl-lithium and an excess of lithium powder and a catalytic amount of DTBB in THF at −78°C leads to the formation of the corresponding β-functionalised organolithium compounds 2a-d, which by reaction with several electrophiles [D2O, ButCHO, PhCHO, Me2CO, (CH2)5CO] at temperatures ranging between −78 and 20°C yields,