Palladium-Catalysed Direct 5-Arylation of Furfurylamine or 2-(Aminoalkyl)thiophene Derivatives
作者:Julien Roger、Henri Doucet
DOI:10.1002/ejoc.201000358
日期:——
The palladium-catalysed direct 5-arylation of furan or thiophene derivatives bearing CH2NHR substituents (with R = COMe or CO2tBu) generally proceeds in good yields by using a catalysts loading of only 0.1-2 mol-%. A wide range of functions such as acetyl, propionyl, formyl, ester, nitrile, trifluoromethyl or fluoro on the aryl bromide is tolerated. Higher yields were generally obtained in the presence
钯催化的带有 CH2NHR 取代基的呋喃或噻吩衍生物(R = COMe 或 CO2tBu)的直接 5-芳基化通常通过使用仅 0.1-2 mol% 的催化剂负载量以良好的产率进行。允许芳基溴上的多种官能团,例如乙酰基、丙酰基、甲酰基、酯、腈、三氟甲基或氟。在缺电子的芳基溴化物存在下通常比在富电子的芳基溴化物存在下获得更高的产率。