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.
TiCl<sub>4</sub>-Catalyzed Indirect Anti-Markovnikov Hydration of Alkynes: Application to the Synthesis of Benzo[<i>b</i>]furans
作者:Lutz Ackermann、Ludwig T. Kaspar
DOI:10.1021/jo070887i
日期:2007.8.1
An efficient methodology for the indirect anti-Markovnikov hydration of unsymmetrically substituted terminal and internal alkynes is based on TiCl4-catalyzed hydroamination reactions. Its application to ortho-alkynylhaloarenes, followed by a copper-catalyzed O-arylation, provides flexible access to substituted benzo[b]furans.
一种不对称取代的末端和内部炔烃的间接反马氏水合的有效方法是基于TiCl 4催化的加氢胺化反应。其在邻炔基卤代芳烃上的应用,然后在铜催化的O-芳基化反应中,可以灵活地获得取代的苯并[ b ]呋喃。