Palladium-catalyzed Annulation of 2-Substituted Silylethynyloxybiaryls through δ-C-H Activation

被引：13
|
作者：
Minami, Yasunori [1 ,2 ]
Anami, Tomohiro [3 ]
Hiyama, Tamejiro [1 ,2 ]
机构：
[1] Chuo Univ, Res & Dev Initiat, Bunkyo Ku, Tokyo 1128551, Japan
[2] JST, ACT C, Chiyoda Ku, Tokyo 1020076, Japan
[3] Chuo Univ, Dept Appl Chem, Bunkyo Ku, Tokyo 1128551, Japan
来源：
CHEMISTRY LETTERS | 2014年 / 43卷 / 11期
关键词：
PROGESTERONE-RECEPTOR MODULATORS; ALKYNYL ARYL ETHERS; DIRECT ARYLATION; FUSED RINGS; INTERNAL ALKYNES; METAL-COMPLEXES; BOND; DERIVATIVES; CYCLOADDITION; HYDROARYLATION;
D O I：
10.1246/cl.140725
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The intramolecular hydroarylation of 2-(silylethynyloxy)-biphenyls takes place with the aid of a palladium catalyst to give 6-methylene-6H-dibenzo[b,d]pyrans. The product can be transformed into 6,6-disubstituted dibenzopyrans via protodesilylation, followed by 1,2-addition. 1,4-Bis[2-(triisopropylsilylethynyloxy)phenyl]benzene is shown to undergo a dual intramolecular insertion reaction leading to the formation of pentacyclic condensed aromatics.
引用
收藏
页码：1791 / 1793
页数：3
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