Imidazole-Promoted Synthesis of N-Substituted Phthalimide from N,N′-Disubstituted Ureas in Solventless Conditions
摘要:
A series of N-substituted phthalimides was synthesized by a thermal reaction between N,N-disubstituted ureas and phthalic acid catalyzed by imidazole in solventless conditions. The products have been obtained in moderate to good yields (53-92%). Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) to view the free supplemental file.
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
Synthesis and hypolipidemic activity of N-substituted phthalimides. Part V
作者:Vera L.M Sena、Rajendra M Srivastava、Ricardo O Silva、Vera L.M Lima
DOI:10.1016/s0014-827x(03)00185-x
日期:2003.12
A series of N-aryl- or N-(1,2,4-triazol-yl)-phthalimides (4a-4i) have been synthesized starting from phthalic anhydride (1) and an appropriate amine (2a-2i). All compounds presented hypolipidemic activity, but compound 4d proved to be the most active and reduced plasma cholesterol and triglyceride levels in Swiss white mice significantly.
phthalimide derivatives (compounds 3a–3m) were synthesized through the reaction of phthalicanhydride and various derivatives of aniline in toluene solvent (Reflux, 24 h). Antiepileptic activity of synthesized compounds (3a–3m) was investigated using two experimental models namely, maximal electroshock (MES) and pentylenetetrazole (PTZ), and the obtained results were compared with diazepam as reference drug
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