J. Stadlwieser et al., 8-FLUORO-6-(METHOXYMETHOXY)QUINOLINE - SYNTHESIS AND REGIOSELECTIVE FUNCTIONALIZATION VIA REACTION WITH ORGANOLITHIUM COMPOUNDS, Helvetica Chimica Acta, 81(6), 1998, pp. 1088-1094
8-Fluoro-6-(methoxymethoxy)quinoline (1) was synthesized, and the reac
tivity of 1 against organolithium compounds was studied under differen
t reaction conditions. With BuLi, directed ortho-metalation (DoM) was
accompanied by 1,2-addition to the C=N bond. 1,2-Addition was exclusiv
ely observed with t-BuLi. Selective ortho-metalation was achieved with
MeLi (Table). Based on these findings, a short and high-yielding synt
hesis of the highly functionalized quinolines 12a-c was developed.