General and Efficient Indole Syntheses Based on Catalytic Amination Reactions
摘要:
Highly flexible and efficient syntheses of the indole backbone are presented starting from o-alkynylhaloarenes. These transformations proceed via a palladium- or a copper-catalyzed amination reaction and a subsequent cyclization reaction in good to excellent yields. Furthermore. a multicatalytic one-pot indole synthesis starting from o-chloroiodobenzene is viable using a single catalyst consisting of an N-heterocyclic carbene palladium complex and Cul.
General and Efficient Indole Syntheses Based on Catalytic Amination Reactions
作者:Lutz Ackermann
DOI:10.1021/ol047649j
日期:2005.2.1
Highly flexible and efficient syntheses of the indole backbone are presented starting from o-alkynylhaloarenes. These transformations proceed via a palladium- or a copper-catalyzed amination reaction and a subsequent cyclization reaction in good to excellent yields. Furthermore. a multicatalytic one-pot indole synthesis starting from o-chloroiodobenzene is viable using a single catalyst consisting of an N-heterocyclic carbene palladium complex and Cul.
Copper-Catalyzed<i>N</i>-Arylation/Hydroamin(d)ation Domino Synthesis of Indoles and its Application to the Preparation of a Chek1/KDR Kinase Inhibitor Pharmacophore
作者:Lutz Ackermann、Sebastian Barfüßer、Harish K. Potukuchi
DOI:10.1002/adsc.200900004
日期:2009.5
Abstractmagnified imageInexpensive copper catalysts allow for efficient syntheses of N‐aryl‐, N‐acyl‐, or N‐H‐(aza)indoles starting from ortho‐alkynylbromoarenes. The broad scope of this domino N‐arylation/hydroamin(d)ation process is highlighted by the synthesis of highly functionalized indoles, as well as of a Chek1/KDR inhibitor pharmacophore.