作者:Henri-Jean Cristau、Pascal P. Cellier、Jean-Francis Spindler、Marc Taillefer
DOI:10.1002/ejoc.200300709
日期:2004.2
Copper-catalysed N-arylation of pyrazoles with aryl or heteroaryl bromides or iodides, which can include functional substituents, was performed under the mildest conditions yet described, with excellent yields and selectivity, by the use as catalyst of a combination of cuprous oxide with a set of inexpensive, chelating oxime-type ligands not previously known to promote such reactions. Other original
铜催化吡唑与芳基或杂芳基溴化物或碘化物(可包括功能性取代基)的 N-芳基化反应是在迄今描述的最温和条件下进行的,通过将氧化亚铜与一套廉价的螯合肟型配体,此前未知可促进此类反应。提供氮和/或氧作为螯合原子的其他原始双齿、三齿或四齿配体也在此类芳基化中成功测试。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)