Faculté des Sciences, Laboratoire de PhysicoChimie des Matériaux et Biomolécules EA 4244, Université François Rabelais, Parc de Grandmont, 37200 Tours, France.
Org Biomol Chem. 2011 Feb 21;9(4):1212-8. doi: 10.1039/c0ob00622j. Epub 2010 Dec 20.
A general and efficient Cu(I)-mediated cross-coupling and heterocyclization reaction of 3-iodoimidazo[1,2-a]pyridine-2-carboxylic acid, and terminal alkynes was developed under very mild conditions. This method allows the introduction in one pot of a third ring fused in positions 2 and 3 of the imidazo[1,2-a]pyridine core with reasonable yields and total regioselectivity. This procedure does not require the use of any expensive supplementary additives, and is palladium-free.
开发了一种在温和条件下,通过碘化 3-碘咪唑并[1,2-a]吡啶-2-羧酸和末端炔烃的通用、高效的 Cu(I)介导的交叉偶联和杂环化反应。该方法可以一锅法引入第三个环,使咪唑并[1,2-a]吡啶核的 2 位和 3 位稠合,产率合理,区域选择性好。该方法不需要使用任何昂贵的辅助添加剂,也不需要使用钯。