Palladium‐Mediated Phosphine‐Dependent Chemoselective Bisallylic Alkylation Leading to Spirocarbocycles
作者:Hervé Clavier、Laurent Giordano、Alphonse Tenaglia
DOI:10.1002/anie.201204629
日期:2012.8.20
Cycles everywhere: The selectivity in the transformations of 1,3‐diones to carbocycles by palladium‐catalyzed bisallylic alkylations is strongly dependent on the phosphine that is employed (see scheme). Moreover, synthesized vinylcyclopentenes can be easily transformed into cycloheptadiene derivatives through a carboncarbon allylic bond cleavage.
无处不在的循环:钯催化的双烯丙基烷基化反应将1,3-二酮转化为碳环的选择性在很大程度上取决于所用的膦(参见方案)。而且,合成的乙烯基环戊烯可以通过碳碳烯丙基键裂解容易地转化成环庚二烯衍生物。