Aldehyde as a Traceless Directing Group for Rh(III)-Catalyzed C–H Activation: A Facile Access to Diverse Indolo[1,2-a]quinolines
摘要:
The aldehyde group has been developed for the first time as a traceless directing group to promote regioselective Rh(III)-catalyzed C-H activation/cyclization of indolyl aldehydes with alkynes. This protocol streamlines access to a variety of appealing indolo[1,2-a]quinoline structures. As illustrative examples, a concise three-step synthesis of indolo[1,2-a]quinoline-based sensitizers is accomplished that exhibits the potential of C-H activation in the construction of organic optoelectronic materials.
A carbon nitride supported copper nanoparticle composite: a heterogeneous catalyst for the N-arylation of hetero-aromatic compounds
作者:Debkumar Nandi、Samarjeet Siwal、Kaushik Mallick
DOI:10.1039/c6nj03584a
日期:——
nitride supported copper nanoparticle composite (Cu–gCN) has been found to be an active catalyst for the N-arylation of hetero-aromatic systems (pyrrole, pyrazole, and substituted indole) and benzamide molecules, with high product selectivity and good to excellent yields, using substituted aryl bromide as a coupling partner. The intercalated structure and the amine functional group of the carbon nitride
coupling of allyl alcohols at the C-4 position of indolederivatives under the C–Hactivation conditions catalyzed by Rh(III) is reported. This results in alkylation at the C-4 position of indolederivatives exclusively. The obtained product forms a tricyclic derivative under aldol reaction conditions, which can be a potential precursor for synthesizing a few alkaloid molecules such as ergot, hapalindole
New 1-arylindoles based serotonin 5-HT7 antagonists. Synthesis and binding evaluation studies
作者:Charlène Sagnes、Guy Fournet、Grzegorz Satala、Andrzej J. Bojarski、Benoît Joseph
DOI:10.1016/j.ejmech.2014.01.055
日期:2014.3
Based on 5-HT1A and 5-HT7 ligand MR25003 scaffold, a new series of 1-aryl indole analogues were prepared and evaluated against 5-HT7 receptors. Modulations of aryl moieties provided a large number of new indolic derivatives. Most of compounds tested have displayed 5-HT7 affinity in the nanomolar range. Among them, 1-(naphthyl)indole derivative 3p (Ki (5-HT7) = 4.5 nM) showed also a good selectivity over 5-HT1A, 5-HT2A and 5-HT6 receptors. This compound was pharmacology characterized as an antagonist. (C) 2014 Elsevier Masson SAS. All rights reserved.