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
已经研究了在有和没有胺添加剂的情况下,在四氢呋喃中通过 1,4-二氟苯与 BuLi 锂化生成 2,5-二氟苯基锂 2 的情况。测定了使用和不使用 TMEDA 生成的有机锂物质 2 的热稳定性数据,并描述了 2 在添加到醛和酮亲电试剂中的合成效用。还检查了相应有机镁试剂 1 的制备和稳定性,该试剂由 1-溴-2,5-二氟苯与异丙基氯化镁的溴-镁交换产生。