Potassium [1-(tert-butoxycarbonyl)-1H-indol-2-yl]trifluoroborate (1) was used in Suzuki-type coupling reactions. First, the best coupling conditions were assessed using bromobenzene as the electrophile. Then, 1 was successfully coupled with various aryl and hetaryl bromides. Finally, the reactivity of 1 towards coupling partners other than bromide derivatives was evaluated. Suzuki coupling - organotrifluoroborates
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.
Synthesis of indoles from aroyloxycarbamates with alkynes <i>via</i> decarboxylation/cyclization
作者:Nuannuan Ma、Peihe Li、Zheng Wang、Qipu Dai、Changwen Hu
DOI:10.1039/c8ob00086g
日期:——
decarboxylation/cyclization of aroyloxycarbamates to realize substituted indoles has been disclosed. Terminal alkynes as the coupling partners lead to site specific 2-substitutedindoles through two pathways, while internal alkynes with aroyloxycarbamates can be transformed to 2,3-disubstituted indoles directly. This protocol is further demonstrated by the efficient synthesis of indoles as well as the