Synthesis of Dibenzofurans via Palladium-Catalyzed Phenol-Directed C-H Activation/C-O Cyclization

被引:303
|
作者
Xiao, Bin [1 ]
Gong, Tian-Jun [1 ]
Liu, Zhao-Jing [1 ]
Liu, Jing-Hui [1 ]
Luo, Dong-Fen [1 ]
Xu, Jun [1 ]
Liu, Lei [1 ]
机构
[1] Tsinghua Univ, Dept Chem, Key Lab Bioorgan Phosphorus Chem & Chem Biol, Minist Educ, Beijing 100084, Peoples R China
关键词
N BOND FORMATION; ARYL HALIDES; DIRECT ARYLATION; DIARYL ETHERS; AMINATION REACTION; COUPLING REACTIONS; ROUTE; ACIDS; FUNCTIONALIZATION; 2-PHENYLPHENOLS;
D O I
10.1021/ja203335u
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A practical, Pd(0)/Pd(II)-catalyzed reaction was developed for phenol-directed C-H activation/C-O cyclization using air as an oxidant. The turnover-limiting step of the process was found to be C-O reductive elimination instead of C-H activation. This reaction can tolerate a variety of functional groups and is complementary to the previous methods for the synthesis of substituted dibenzofurans.
引用
收藏
页码:9250 / 9253
页数:4
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