Preparation, Thermal Stability and Carbonyl Addition Reactions of 2,5-Difluorophenyl Lithium and 2,5-Difluorophenyl Grignard
作者:Jeremy P. Scott、Sarah E. Brewer、Antony J. Davies、Karel M. Brands
DOI:10.1055/s-2004-825592
日期:——
The generation of 2,5-difluorophenyl lithium 2 by lithiation of 1,4-difluorobenzene with BuLi in THF, with and without amine additives, has been surveyed. Thermal stability data of the organolithium species 2 generated with and without TMEDA were determined and the synthetic utility of 2 in the addition to aldehyde and ketone electrophiles is described. Preparation and stability of the corresponding