Synthesis of Biarylsvia Palladium-Catalyzed [2+2+2] Cocyclization of Arynes and Diynes: Application to the Synthesis of Arylnaphthalene Lignans
作者:Yoshihiro Sato、Takayuki Tamura、Atsushi Kinbara、Miwako Mori
DOI:10.1002/adsc.200600587
日期:2007.3.5
palladium(0)-catalyzed [2+2+2] cocyclization of diynes and arynes was developed. By this [2+2+2] cocyclization, various arylnaphthalene derivatives, including a sterically hindered 2,2′-disubstituted-1,1′-binaphthyl, can be constructed by virtue of a variety of combinations of diynes and aryne precursors. Using this [2+2+2] cocyclization as a key step, the total syntheses of natural arylnaphthalene lignans, taiwanin
开发了一种通过钯(0)催化二炔和芳烃的[2 + 2 + 2]共环化构建联芳基的新方法。通过这种[2 + 2 + 2]共环化,可以通过二炔和芳烃前体的各种组合来构建各种芳基萘衍生物,包括空间受阻的2,2'-二取代-1,1'-联萘基。使用该[2 + 2 + 2]共环化作为关键步骤,可以实现天然芳基萘木脂素,黄豆苷元C,黄豆苷元E和脱氢脱氧鬼臼毒素的总合成。