New Mixed Li/Mg and Li/Mg/Zn Amides for the Chemoselective Metallation of Arenes and Heteroarenes

作者:Rohbogner Christoph J; Wunderlich Stefan H; Clososki Giuliano C; Knochel Paul*
来源:European Journal of Organic Chemistry, 2009, 2009(11): 1781-1795.
DOI:10.1002/ejoc.200801277

摘要

New mixed Li/Mg and Li/Mg/Zn amides have been synthesized starting from readily prepared secondary amines. They allow a highly chemoselective directed magnesiation or zincation of various polyfunctional aromatics and heteroaromatics. The kinetic basicity, solubility and stability of these new bases have been compared with those of the corresponding 2,2,6,6-tetramethylpiperamide-derived bases.

  • 出版日期2009-4