Aminopotassiation by Mixed Potassium/Lithium Amides: A Synthetic Path to Difficult to Access Phenethylamine Derivates
作者:Andreas Hermann、Ulrike Opper、Andreas Voß、Lukas Brieger、Felix Otte、Christian Unkelbach、Donal F. O'Shea、Carsten Strohmann
DOI:10.1002/anie.202009318
日期:2020.12.7
reactions with lithium amides, potassium amides and mixed lithium/potassium amides are presented. A combination of structural characterization, DFT calculations and electrophile reactions of aminometalated intermediates has shown the advantages of using a mixed metal strategy. While potassium amides fail to add, the lithium amides are uncontrollable and eliminated, yet the mixed K/Li amides deliver the
提出了从氨基金属化反应与锂酰胺,酰胺钾和混合的锂/钾酰胺中获得的见解。氨基金属化中间体的结构表征,DFT计算和亲电子反应的结合显示了使用混合金属策略的优势。尽管无法添加酰胺钾,但无法控制和消除锂酰胺,但混合的K / Li酰胺在两种体系中均表现最佳。氨基钾化作用继续形成烷基钾物质,该烷基钾物质比其锂对应物具有更高的稳定性,从而使其能够被分离,从而得到进一步的表征。