An efficient synthesis of 4-bromo-N-substituted oxindoles by an intramolecular copper-catalyzed amidation reaction
作者:Adri van den Hoogenband、Jos H.M. Lange、Jack A.J. den Hartog、Remco Henzen、Jan Willem Terpstra
DOI:10.1016/j.tetlet.2007.05.009
日期:2007.6
highly efficient synthetic approach to novel 4-bromo-N-substituted oxindoles is described. The method involves a mild intramolecular copper-catalyzed amidation reaction of N-substituted 2,6-dibromophenylacetamides. In contrast to our recently published palladium-catalyzed amidation reaction, no concomitant dimerization on the 3-position of the formed oxindole occurs.
描述了一种新颖的4-溴-N-取代的羟吲哚的高效合成方法。该方法涉及N-取代的2,6-二溴苯基乙酰胺的轻度分子内铜催化的酰胺化反应。与我们最近发表的钯催化的酰胺化反应相反,在形成的羟吲哚的3位上没有发生伴随的二聚反应。