AbstractEfficient and selective direct synthesis of diarylamines from aryl halides and arginine as a nitrogen‐donor reagent is reported. Arginine, which is an oral supplement, acts as a useful nitrogen source donor in the copper‐catalyzed reaction. Fe3O4/Cu3(BTC)2, which was easily separated and recycled with a magnet, improved the rate and facilitation of the synthesis of diarylamines selectively. The introduction of a new and available N‐source, simple magnetic separation process, normal atmospheric conditions, and excellent yields under mild reaction conditions are other important features of this work.
DOI:
10.1002/hc.21450
作为试剂:
描述:
4-碘苯酚 在
Tri-o-tolylamin 、 palladium diacetate 、 potassium carbonate 、 TIR domain of human sterile alpha and toll/interleukin receptor motif containing protein 1 、 三乙胺 作用下,
以
乙醇 、 乙腈 为溶剂,
反应 24.25h,
生成
Efficient copper-catalyzed coupling of aryl chlorides, bromides and iodides with aqueous ammonia
作者:Hanhui Xu、Christian Wolf
DOI:10.1039/b904188e
日期:——
The copper(I)-catalyzed synthesis of a range of primary anilines from electron-rich and electron-deficient aryl halides including aryl chlorides has been achieved with aqueous ammonia, avoiding the need for inert atmosphere, expensive catalysts and ligands, anhydrous solvents, and additional base or other additives.
Novel quinazolinamide derivatives of the formula (I), in which R
1
-R
3
have the meanings indicated in Claim
1,
are HSP90 inhibitors and can be used for the preparation of a medicament for the treatment of diseases in which the inhibition, regulation and/or modulation of HSP90 plays a role.
Bis(ortho-substituted aryl)amines were arylated on the nitrogen atom with various haloarenes in high yields using the palladium catalyst, which was generated from palladium(II) acetate and tri(tert-butyl)phosphine.
Phase-Transfer Catalysis in the Ullmann Synthesis of Substituted Triphenylamines
作者:Sylvie Gauthier、Jean M. J. Fréchet
DOI:10.1055/s-1987-27953
日期:——
A variety of substituted triphenylamine derivatives were prepared in nearly quantitative yields by the use of 18-crown-6 as a phase transfer catalyst under the Ullmann reaction conditions.
N-alkylation andN-arylation of anilines starting from a mild N?Mg reagent: Its activation causing the ?N?C? coupling to extend the unified structure-reactivity relationship
New N-alkylation and N-arylation procedures starting from anilinomagnesium (ArNHMgBr) are reported. For N-alkylation with alkyl bromides, addition of hexamethylphosphoramide to an ArNHMgBr solution in tetrahydrofuran (THF) is effective. After heating at 55°C, N-monoalkylation product was obtained in 60–90% yield, slight dialkylation taking place. The combined use of aryliminodimagnesium [ArN(MgBr)2]