Improved studies of cross-coupling reactions of 5-(tri-<i>n</i>-butystannyl)- and 5,5′-bis(tri-<i>n</i>-butylstannyl)-2,2′-bithiophene with aryl halides
作者:Abdel-Sattar S. Hamad Elgazwy
DOI:10.1002/jhet.5570410517
日期:2004.9
(1) or (2) and aryl bromide partners. The inclusion of aryl iodide instead of aryl bromide with the same organostannanes, significantly improves the efficiency of the coupling, providing a variety of desired products in good to excellent yield. The yields of Stille coupling are compared to the different reactivity of aryl halides. This study of Stille coupling with different aryl halides are documented
当使用受阻有机锡(1)或(2)和芳基溴化物伙伴时,在标准条件下斯蒂勒偶联的收率低。相同的有机锡烷基化物包括芳基碘化物而不是芳基溴化物,可显着提高偶联效率,以良好至极佳的收率提供各种所需的产物。将Stille偶联的收率与芳基卤化物的不同反应性进行比较。Stille与不同的芳基卤化物偶联的研究已记录并合理化。