Easily Accessible Auxiliary for Palladium-Catalyzed Intramolecular Amination of C(sp<sup>2</sup>)H and C(sp<sup>3</sup>)H Bonds at δ- and ε-Positions
for selectiveCH activation under palladium catalysis. The novel auxiliary showed its first powerful application in CH functionalization of remote positions. Both C(sp2)H and C(sp3)Hbonds at δ‐ and ε‐positions were effectively activated, thus giving tetrahydroquinolines, benzomorpholines, pyrrolidines, and indolines in moderate to excellent yields by palladium‐catalyzed intramolecular CH amination
Highly Efficient Method for the Synthesis of Carboxamides from Carboxylic Acids and Amines Using Benzenesulfonic Anhydride (BSA)
作者:Setsuo Funasaka、Koji Kato、Teruaki Mukaiyama
DOI:10.1246/cl.2007.1456
日期:2007.12.5
A highly efficient method by using benzenesulfonic anhydride (BSA) in the presence of 4-(dimethylamino)pyridine (DMAP) to synthesize carboxamides from various carboxylic acids and amines including ...
Palladium-catalyzed oxalyl amide directed ortho-alkynylation of arylalkylamine derivatives via rare six- and seven-membered palladacycles has been reported.
钯催化的以草酸酰胺为导向的芳基烷基胺衍生物的邻位炔基化反应,通过罕见的六元和七元钯环已经报道。
Rh(<scp>iii</scp>)-catalyzed regioselective intermolecular <i>N</i>-methylene Csp<sup>3</sup>–H bond carbenoid insertion
A Rh(III)-catalyzed regioselective intermolecular carbenoid insertion into the N-methylene Csp3–H bond of acyclic aliphatic amides has been achieved, taking advantage of bidentate–chelation assistance. This methodology has been successfully applied to a broad range of linear and branched-chain N-alkylamides, thus providing a practical method for the assembly of diverse beta-amino esters. Mechanism
Palladium-catalyzed picolinamide-directed iodination of remote <i>ortho</i>-C−H bonds of arenes: Synthesis of tetrahydroquinolines
作者:William A Nack、Xinmou Wang、Bo Wang、Gang He、Gong Chen
DOI:10.3762/bjoc.12.119
日期:——
A new palladium-catalyzed picolinamide (PA)-directed ortho-iodination reaction of epsilon-C(sp(2))-H bonds of gamma-arylpropylamine substrates is reported. This reaction proceeds selectively with a variety of gamma-arylpropylamines bearing strongly electron-donating or withdrawing substituents, complementing our previously reported PA-directed electrophilic aromatic substitution approach to this transformation