Decarboxylative Cross-Electrophile Coupling of <i>N</i>-Hydroxyphthalimide Esters with Aryl Iodides
作者:Kierra M. M. Huihui、Jill A. Caputo、Zulema Melchor、Astrid M. Olivares、Amanda M. Spiewak、Keywan A. Johnson、Tarah A. DiBenedetto、Seoyoung Kim、Laura K. G. Ackerman、Daniel J. Weix
DOI:10.1021/jacs.6b01533
日期:2016.4.20
A new method for the decarboxylative coupling of alkyl N-hydroxyphthalimide esters (NHP esters) with aryl iodides is presented. In contrast to previous studies that form alkyl radicals from carboxylic acid derivatives, no photocatalyst, light, or arylmetal reagent is needed, only nickel and a reducing agent (Zn). Methyl, primary, and secondary alkyl groups can all be coupled in good yield (77% ave
提出了一种烷基 N-羟基邻苯二甲酰亚胺酯(NHP 酯)与芳基碘化物脱羧偶联的新方法。与之前从羧酸衍生物形成烷基的研究相比,不需要光催化剂、光或芳基金属试剂,只需要镍和还原剂(Zn)。甲基、伯烷基和仲烷基都可以以良好的收率(平均收率 77%)进行偶联。还提出了一种与酰基氯的偶联。(dtbbpy)Ni(2-甲苯基)I与NHP酯的化学计量反应首次表明芳基镍(II)配合物可以直接与NHP酯反应形成烷基化芳烃。