Palladium-catalysed reactions of 6-halogeno-1,1′-binaphthyl derivatives. A detailed investigation of structure/reactivity and structure/selectivity relationships
作者:Csaba Fehér、Béla Urbán、László Ürge、Ferenc Darvas、József Bakos、Rita Skoda-Földes
DOI:10.1016/j.tet.2011.06.011
日期:2011.8
derivatives of different structure were synthesised starting from 2,2′-dihydroxy-1,1′-binaphthyl 1. Several new 6-substituted binaphthyl compounds were obtained via the palladium-catalysed reactions of these derivatives. The reactivity of 6-iodo derivatives was much greater in most cases. In cross-coupling reactions the 6-bromo compounds were converted into the products using longer reaction times
从2,2'-二羟基-1,1'-联萘基1开始合成了五种不同结构的6-卤代-联萘基衍生物。通过这些衍生物的钯催化反应,获得了几种新的6-取代的联萘化合物。在大多数情况下,6-碘衍生物的反应性要高得多。在交叉偶联反应中,使用更长的反应时间和/或更高的温度将6-溴化合物转化为产物。两种底物之间的反应性差异在氨基羰基化和Heck反应中尤为明显。