Iron Catalysis for Modular Pyrimidine Synthesis through β-Ammoniation/Cyclization of Saturated Carbonyl Compounds with Amidines
作者:Xue-Qiang Chu、Wen-Bin Cao、Xiao-Ping Xu、Shun-Jun Ji
DOI:10.1021/acs.joc.6b02767
日期:2017.1.20
method for the modular synthesis of various pyrimidine derivatives by means of the reactions of ketones, aldehydes, or esters with amidines in the presence of an in situ prepared recyclable iron(II)-complex was developed. This operationally simple reaction proceeded with broad functional group tolerance in a regioselective manner via a remarkable unactivated β-C–H bond functionalization. Control experiments
开发了一种有效的方法,用于在原位制备的可回收铁(II)络合物存在下,通过酮,醛或酯与am的反应进行模块化合成各种嘧啶衍生物。该操作简单的反应通过显着的未激活的β-C-H键官能化,以区域选择性的方式在宽泛的官能团耐受性下进行。进行了对照实验以加深对机理的了解,并且反应很可能通过设计的TEMPO络合/烯胺添加/瞬时α占据/β-TEMPO消除/环化顺序进行。