Palladium-catalyzed ring-opening reactions of C1 substituted 7-oxanorbornadiene derivatives with aryl iodides were investigated. The optimal conditions for this reaction were found to be PdCl2(PPh3)2, ZnCl2, Et3N and Zn in THF. Both steric and electronic factors played a role in the outcome of the reaction as increasing the steric bulk on the bridgehead carbon decreased the yield. These reactions were
研究了C1取代的7-氧杂降
冰片二烯衍
生物与芳基
碘化物的
钯催化开环反应。发现该反应的最佳条件是THF中的PdCl 2(PPh 3)2,ZnCl 2,Et 3 N和Zn。空间的和电子的因素都在反应的结果中起作用,因为桥头碳上的空间体积的增加降低了产率。发现这些反应是高度区域选择性的,在所有情况下仅给出两种可能的区域异构体之一。获得了各种各样的新颖的,高度取代的
联苯衍
生物。