The Nickel(II)-Catalyzed Direct Benzylation, Allylation, Alkylation, and Methylation of C–H Bonds in Aromatic Amides Containing an 8-Aminoquinoline Moiety as the Directing Group
Direct alkylation via the cleavage of the ortho C–H bonds by a nickel-catalyzed reaction of aromaticamides containing an 8-aminoquinoline moiety as the directing group with alkyl halides is report...
Copper-Mediated Decarboxylative Coupling of Benzamides with <i>ortho</i>
-Nitrobenzoic Acids by Directed C−H Cleavage
作者:Kazutaka Takamatsu、Koji Hirano、Masahiro Miura
DOI:10.1002/anie.201701918
日期:2017.5.2
A copper‐mediated decarboxylative coupling of benzamides with ortho‐nitrobenzoic acids by 8‐aminoquinoline‐directed C−H cleavage has been developed. This reaction proceeds smoothly with only a copper salt to produce the corresponding biaryl compounds in good yields. The products can be easily transformed into various nitrogen‐containing heterocyclic compounds. Moreover, the combination of copper and
Ruthenium-catalyzed direct arylation of C–H bonds in aromatic amides containing a bidentate directing group: significant electronic effects on arylation
作者:Yoshinori Aihara、Naoto Chatani
DOI:10.1039/c2sc21506c
日期:——
by a ruthenium-catalyzed reaction of aromatic amides having an 8-aminoquinoline moiety with aryl bromides. The reaction shows high functional group compatibility. The reaction proceeds in a highly selective manner at the less hindered C–H bonds of meta-substituted aromatic amides. Significant electronic effects are observed in Hammett plots. Electron-withdrawing groups on the aromatic amides facilitate
Phenyltrimethylammonium Salts as Methylation Reagents in the Nickel-Catalyzed Methylation of C−H Bonds
作者:Takeshi Uemura、Mao Yamaguchi、Naoto Chatani
DOI:10.1002/anie.201511197
日期:2016.2.24
Methylation of C(sp2)−H bonds was achieved through the NiII‐catalyzed reaction of benzamides with phenyltrimethylammonium bromide or iodide as the source of the methyl group. The reaction has a broad scope and shows high functional‐group compatibility. The reaction is also applicable to the methylation of C(sp3)−H bonds in aliphatic amides.