Zincate-Mediated Arylation Reactions of Acridine: Pre- and Postarylation Structural Insights
作者:Alberto Hernán-Gómez、Emma Herd、Marina Uzelac、Thomas Cadenbach、Alan R. Kennedy、Ivana Borilovic、Guillem Aromı́、Eva Hevia
DOI:10.1021/om501251q
日期:2015.6.8
utility of homo(aryl) lithum zincate reagents [LiZnPh3] (2) and [Li2ZnPh4] (3), made by cocomplexation of variable amounts of their monometallic components LiPh and ZnPh2 (1), as chemoselective nucleophilic arylating reagents. Lithium zincates 2 and 3 were both characterized by multinuclear (1H, 13C, and 7Li) NMR spectroscopy, and in the case of 2, a classical reagent in heterobimetallic chemistry, the
这项研究探索了通过可变数量的单价金属成分LiPh和ZnPh 2(1)的共络合制备的均化(芳基)锂锌酸锂(LiZnPh 3 ](2)和[Li 2 ZnPh 4 ](3)的合成实用性,作为化学选择性亲核芳基化试剂。锌酸锂2和3都通过多核(1 H,13 C和7 Li)NMR谱表征,在2的情况下,异双金属化学中的经典试剂是其O n Bu的分子结构。通过X射线晶体学确定了2种溶剂化物[LiZnPh 3(O n Bu 2)2 ] 2·2O Bu 2。使用合成相关的N杂环分子a啶(acr,NC 13 H 9),证明了一种新的锌酸酯介导的芳基化方法,该方法可以使acr在其C9位进行化学选择性芳基化,得到9,10-二氢-9-苯基-啶(4)使用微波辐射(125°C,20分钟)以95%的产率收率。这些条件与以前使用ZnPh 2的过渡金属催化方法相反作为芳基化试剂,需要更长的反应时间(130°C,20 h)。用D