Nitrogen-centered radical-mediated C–H imidation of arenes and heteroarenes <i>via</i> visible light induced photocatalysis
作者:Hyejin Kim、Taehoon Kim、Dong Gil Lee、Sang Weon Roh、Chulbom Lee
DOI:10.1039/c4cc03905j
日期:——
The C-H imidation of arenes and heteroarenes has been achieved via visible light induced photocatalysis. In the presence of an iridium(III) photoredox catalyst, the reaction of aromatic substrates with N-chlorophthalimide furnishes the N-aryl products at room temperature through a nitrogen-centered radical mediated aromatic substitution.
In this study, a visible-light-induced intermolecular C-H bond imidation of arenes was achieved at ambient condition. By using simple phthalimide with (diacetoxyiodo)benzene and molecular iodine, direct metal-/photocatalyst-free C-N bond formation was achieved. The imidation protocol was designed by using time-dependent density functional theory calculations and experimentally demonstrated for 28 substrates
Synthesis and SAR of novel, non-MPEP chemotype mGluR5 NAMs identified by functional HTS
作者:Ya Zhou、Alice L. Rodriguez、Richard Williams、C. David Weaver、P. Jeffrey Conn、Craig W. Lindsley
DOI:10.1016/j.bmcl.2009.10.059
日期:2009.12
This Letter describes the discovery and SAR of three novel series of mGluR5 non-competitive antagonists/negative allosteric modulators (NAMs) not based on manipulation of an MPEP/MTEP chemotype identified by a functional HTS approach. This work demonstrates fundamentally new mGluR5 NAM chemotypes with submicromolar potencies, and further examples of a mode of pharmacology 'switch' to provide PAMs with a non-MPEP scaffold. (C) 2009 Elsevier Ltd. All rights reserved.
Photocatalytic C–H Activation and Amination of Arenes with Nonactivated <i>N</i>-Hydroxyphthalimides Involving Phosphine-Mediated N–O Bond Scission
作者:Zhentao Pan、Bo Chen、Jingxi Fang、Tong Liu、Jiayao Fang、Yongmin Ma
DOI:10.1021/acs.joc.2c01975
日期:2022.11.4
Synthesis of phthalimides, isoindolin-1-ones and isoindolines bearing aminobenzoic acids as a new fluorescent compounds
properties of nine newcompounds based on phthalimides, isoindolin-1-ones and isoindolines bearing aminobenzoic acids (2-aminobenzoic acid, 3-aminobenzoic acid and 4-aminobenzoic acid), which were obtained under mild reaction conditions. The photophysical properties of all the compounds were studied by electronic absorption and fluorescence spectroscopy in methanol solutions. All compounds exhibited fluorescence