Palladium-Catalyzed Tandem Regioselective Oxidative Coupling from Indoles and Maleimides: One-Pot Synthesis of Indolopyrrolocarbazoles and Related Indolylmaleimides

被引:57
|
作者
An, Yu-Long [1 ]
Yang, Zhen-Hua [1 ]
Zhang, He-Hui [1 ]
Zhao, Sheng-Yin [1 ,2 ]
机构
[1] Donghua Univ, Dept Chem, Shanghai 201620, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Bioorgan & Nat Prod Chem, Shanghai 200032, Peoples R China
关键词
C-H FUNCTIONALIZATION; BIOLOGICAL EVALUATION; MICHAEL ADDITION; INDOLOCARBAZOLE; ALKENYLATION; PYRROLES; ANALOGS; SYSTEM; DERIVATIVES; CARBAZOLES;
D O I
10.1021/acs.orglett.5b02944
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
An efficient Pd(II)-catalyzed approach for the direct synthesis of indolo[3,2-a]pyrrolo[3,4-c]carbazole-6,8-diones has been developed from both free and protected (NH) indoles and maleimides via a regioselective tandem oxidative coupling reaction. The yields are moderate to excellent. In addition, 2-substituted indoles are suitable substrates in this protocol, leading to the formation of indolylmaleimides. The present methodology provides a concise route to highly functionalized indolopyrrolocarbazole derivatives.
引用
收藏
页码:152 / 155
页数:4
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