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.
Sterically Controlled, Palladium-Catalyzed Intermolecular Amination of Arenes
作者:Ruja Shrestha、Paramita Mukherjee、Yichen Tan、Zachary C. Litman、John F. Hartwig
DOI:10.1021/ja4032677
日期:2013.6.12
the Pd-catalyzed amination of arenes to form N-aryl phthalimides with regioselectivity controlled predominantly by steric effects. Mono-, di-, and trisubstituted arenes lacking a directing group undergo amination reactions with moderate to high yields and high regioselectivities from sequential addition of PhI(OAc)2 as an oxidant in the presence of Pd(OAc)2 as catalyst. This sterically derived selectivity
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
[EN] N-SUBSTITUTED AMINOTETRALINS AS LIGANDS FOR THE NEUROPEPTIDE Y Y5 RECEPTOR USEFUL IN THE TREATMENT OF OBESITY AND OTHER DISORDERS<br/>[FR] AMINOTETRALINES N SUBSTITUEES, LIGANDS DU RECEPTEUR Y Y5 DU NEUROPEPTIDE SERVANT AU TRAITEMENT DE L'OBESITE ET D'AUTRES TROUBLES
申请人:ORTHO-MCNEIL PHARMACEUTICAL, INC.
公开号:WO1999055667A1
公开(公告)日:1999-11-04
(EN) $g(b)-Aminotetralin derivatives of formula (1): which are ligands for the neuropeptide Y Y5 (NPY5) receptor, methods of preparation and pharmaceutical compositions containing a $g(b)-aminotetralins derivative as the active ingredient are described. The $g(b)-aminotetralins are useful in the treatment of disorders and diseases associated with NPY receptor subtype Y5.(FR) L'invention porte sur des dérivés d'aminotétraline de formule (1) ligands du récepteur Y Y5 (NPY5) du neuropeptide, sur leurs procédés de préparation, et sur des compositions pharmaceutiques les contenant comme principe actif. Les aminotétralines servent pour le traitement de troubles et de maladies liées au sous-type Y5 du récepteur NPY.
Intermolecular Oxidative C–N Bond Formation under Metal-Free Conditions: Control of Chemoselectivity between Aryl sp<sup>2</sup> and Benzylic sp<sup>3</sup> C–H Bond Imidation
作者:Hyun Jin Kim、Jiyu Kim、Seung Hwan Cho、Sukbok Chang
DOI:10.1021/ja207296y
日期:2011.10.19
A new synthetic approach toward intermolecular oxidative C-N bond formation of arenes has been developed under transition-metal-free conditions. Complete control of chemoselectivity between aryl sp(2) and benzylic sp(3) C-H bond imidation was achieved by the choice of nitrogen sources, representatively being phthalimide and dibenzenesulfonimide, respectively.