General and efficient route for the synthesis of 3,4-disubstituted coumarins via Pd-catalyzed site-selective cross-coupling reactions

被引：133
作者：
Zhang, Liang
Meng, Tianhao
Fan, Renhua
Wu, He
机构：
[1] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometal, Shanghai 200032, Peoples R China
来源：
JOURNAL OF ORGANIC CHEMISTRY | 2007年 / 72卷 / 19期
关键词：
D O I：
10.1021/jo071117+
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
[GRAPHICS] Palladium-catalyzed site-selective cross-coupling reactions of 3-bromo-4-trifloxycoumarin or 3-bromo4-tosyloxycoumarin provide an efficient and facile route for the synthesis of 3,4-disubstituted coumarins, which include 3,4-diarylcoumarins, 3-amino-4-arylcoumarins, and 3-aryl-4-aminocoumarins. The order of reactivity of the (pseudo)halide substituents in the coumarins was found to be 4-OTf > 3-Br > 4-OTs.
引用
收藏
页码：7279 / 7286
页数：8
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