Decarboxylative Cross-Electrophile Coupling of N-Hydroxyphthalimide Esters with Aryl Iodides
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- 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
- 刊名：Journal of the American Chemical Society
- 出版年：2016
- 出版时间：April 20, 2016
- 年：2016
- 卷：138
- 期：15
- 页码：5016-5019
- 全文大小：370K
- 年卷期：0
- ISSN：1520-5126
文摘
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 yield). One coupling with an acid chloride is also presented. Stoichiometric reactions of (dtbbpy)Ni(2-tolyl)I with an NHP ester show for the first time that arylnickel(II) complexes can directly react with NHP esters to form alkylated arenes.