First Regioselective Ortho-Lithiation Induced by a 2-Chloropyridyl Group Complexation
作者:Yves Fort、Alain L. Rodriguez
DOI:10.1021/jo026788g
日期:2003.6.1
promotes an exclusive regioselective metalation of 2-aryl-6-chloropyridine compounds at the aromatic ortho position demonstrating that the 2-chloropyridyl moiety may be considered as a directing group. This functionally directed metalation group was successfully used for the selective lithiation of substituted aromatics and for the straightforward preparation of new N,P ligands.
结果表明,Et(2)O中的t-BuLi促进了在芳族邻位的2-芳基-6-氯吡啶化合物的排他性区域选择性金属化,表明2-氯吡啶基部分可被视为直接基团。该功能导向的金属化基团已成功用于取代芳族化合物的选择性锂化和直接制备新的N,P配体。