Carbonylative Tertiary Amide Synthesis from Aryl Iodides and Tertiary Amines <i>via</i>
Oxidant-Free C−N Bond Cleavage Catalyzed by Palladium(II) Chloride in Polyethylene Glycol/Water
作者:Rajendra S. Mane、Bhalchandra M. Bhanage
DOI:10.1002/adsc.201700317
日期:2017.8.7
the C−N bond cleavage. The developed protocol offers the selective N‐dealkylation of tertiary amines in a polyethylene glycol/water solvent system. Numerous symmetrical and unsymmetrical aliphatic, alicyclic, benzyl, as well as aromatic tertiary amines with aryl iodides were well tolerated and afforded the desired products in good yields. Furthermore, the in situ generation of palladium(0) nanoparticles
Sunlight assisted direct amide formation via a charge-transfer complex
作者:Irit Cohen、Abhaya K. Mishra、Galit Parvari、Rachel Edrei、Mauricio Dantus、Yoav Eichen、Alex M. Szpilman
DOI:10.1039/c7cc05300b
日期:——
We report on the use of charge-transfercomplexes between amines and carbon tetrachloride, as novel way to activate the amine for photochemical reactions. This principle is demonstrated in a mild, transition metal free, visible light assisted, dealkylative amide formation from feedstock carboxylic acids and amines. The low absorption coefficient of the complex allows deep light penetration and thus
Palladium-Catalyzed Cross-Coupling Reaction of Arylboronic Acids with Chloroformate or Carbamoyl Chloride
作者:Min-Zhi Deng、Ya-Zhen Duan
DOI:10.1055/s-2004-837211
日期:——
The first palladium-catalyzedcross-coupling reaction between substituted arylboronicacids and chloroformate or carbamoyl chloride is described. One-carbon homologation from arylboronicacids was achieved to give corresponding esters or amides in good yields.
A novel Pd-catalyzed N-dealkylative carbonylation of tertiary amines for the preparation of amides
作者:Tao Fang、Xu-Hong Gao、Ri-Yuan Tang、Xing-Guo Zhang、Chen-Liang Deng
DOI:10.1039/c4cc07378a
日期:——
A novel and convenient protocol for the formation of amides via palladium-catalyzed N-dealkylative carbonylation of alkyl tertiary amines has been developed. In the presence of PdCl2(PhCN)2, CuO, PhCN and CO, a range of substituents on both aryl iodides and alkyl tertiary amines were compatible with the reaction to afford a series of N,N-disubstituted amides in moderate to excellent yields.