Copper-Catalyzed Alkylation of Aliphatic Amines Induced by Visible Light
作者:Carson D. Matier、Jonas Schwaben、Jonas C. Peters、Gregory C. Fu
DOI:10.1021/jacs.7b09582
日期:2017.12.13
the alkylation of an amine by an alkyl halide serves as a "textbook example" of a nucleophilic substitution reaction, the selective mono-alkylation of aliphatic amines by unactivated, hindered halides persists as a largely unsolved challenge in organic synthesis. We report herein that primary aliphatic amines can be cleanly mono-alkylated by unactivated secondary alkyl iodides in the presence of visible
尽管烷基卤化物对胺的烷基化作为亲核取代反应的“教科书示例”,但未活化的受阻卤化物对脂肪族胺的选择性单烷基化仍然是有机合成中主要未解决的挑战。我们在本文中报道,在可见光和铜催化剂的存在下,伯脂肪胺可以被未活化的仲烷基碘完全单烷基化。该方法在温和条件 (-10 °C) 下运行,显示出良好的官能团兼容性,并使用市售催化剂组分。使用 TEMPO 进行的捕获实验与在笼外过程中通过烷基自由基形成 CN 键是一致的。
Aminopyridinato Titanium Catalysts for the Hydroaminoalkylation of Alkenes and Styrenes
作者:Jaika Dörfler、Sven Doye
DOI:10.1002/anie.201206027
日期:2013.2.4
The linear product is formed as the major product when in situ generated titanium complexes with aminopyridinato ligands are used as catalysts for hydroaminoalkylation reactions of styrenes (see scheme). The reaction is not limited to the use of N‐methylanilines and for the first time can be performed with N‐alkylanilines bearing alkyl groups larger than methyl, or even with dialkylamines. The best