Tetrahedron Letters

Copper-catalyzed C–N coupling of amides and nitrogen-containing heterocycles in the presence of cesium fluoride

DP Phillips, XF Zhu, TL Lau, X He, K Yang, H Liu

文献索引：Phillips, Dean P.; Zhu, Xue-Feng; Lau, Thomas L.; He, Xiaohui; Yang, Kunyong; Liu, Hong Tetrahedron Letters, 2009 , vol. 50, # 52 p. 7293 - 7296

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被引用次数: 26

摘要

The copper-catalyzed C–N coupling of amides to aryl halides usually requires the use of strong alkali metal bases, such as K2CO3, K3PO4, and Cs2CO3, at high temperature. We discovered that CsF is sufficiently basic to promote the cross-coupling of amides and carbamates with aryl halides. Most aryl iodides coupled in high yield at room temperature. This alternative base may be a suitable replacement for substrates that are incompatible ...