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Palladium-Catalyzed Cascade Process Consisting of Isocyanide Insertion and Benzylic C(sp(3))-H Activation: Concise Synthesis of Indole Derivatives

  作者 NANJO TAKESHI; TSUKANO CHIHIRO; TAKEMOTO YOSHIJI  
  选自 期刊  Organic Letters;  卷期  2012年14-16;  页码  4270-4273  
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[摘要]Synthesis of the indole skeleton was achieved using a Pd-catalyzed cascade process consisting of isocyanide insertion and benzylic C(sp(3))-H activation. It was found that slow addition of isocyanide is effective for reducing the amount of catalyst needed and Ad(2)P(n)Bu is a good ligand for C(sp(3))-H activation. The construction of the tetracyclic carbazole skeleton was also achieved by a Pd-catalyzed domino reaction incorporating alkyne insertion.

 
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