作者:Edwin M. Kaiser
DOI:10.1016/s0040-4020(01)91923-4
日期:1983.1
negative charge of such anions resides predominantly on the ring N atoms. The site of lithiation on pyridines and quinolines bearing Me groups in both the 2- and 4-positions depends upon the ability of the ring N atom to complex with the metallating agents. Carbanions derived from methylated pyridines, quinolines, naphthyridines, isoquinolines, pyrido[4,3-b]carbazoles, pteridines, pyrido[3,4-b] indoles and
含氮杂环上的Me基可以通过各种强碱性试剂方便地金属化,以提供合成上有用的碳负离子。这种阴离子的负电荷主要存在于环N原子上。在2-和4-位带有Me基团的吡啶和喹啉上的锂化位点取决于环N原子与金属化剂络合的能力。讨论了衍生自甲基化吡啶,喹啉,萘啶,异喹啉,吡啶并[4,3-b]咔唑,蝶啶,吡啶并[3,4-b]吲哚和喹喔啉的碳负离子。提供了参考文献,描述了这些试剂与各种常见和不常见的亲电试剂的缩合反应。