Friedel−Crafts Arylation Reactions of <i>N</i>-Sulfonyl Aldimines or Sulfonamidesulfones with Electron-Rich Arenes Catalyzed by FeCl<sub>3</sub>·6H<sub>2</sub>O: Synthesis of Triarylmethanes and Bis-heteroarylarylmethanes
作者:Ponnaboina Thirupathi、Sung Soo Kim
DOI:10.1021/jo1010137
日期:2010.8.6
The FeCl3 center dot 6H(2)O-catalyzed Friedel-Crafts arylation reactions of N-sulfonyl aldimines or sulfonamidesulfones with electron-rich arenes and heteroarenes, which lead to the formation of triarylmethanes and bis-heteroarylarylmethanes, are developed. The use of mild reaction conditions, low catalytic loading, high yield, and single step synthesis are the advantages of the present procedure.
Heterobimetallic Ir–Sn catalysis: aza-Friedel–Crafts reaction of N-sulfonyl aldimines
作者:Paresh Nath Chatterjee、Arnab Kumar Maity、Swapna Sarita Mohapatra、Sujit Roy
DOI:10.1016/j.tet.2013.01.074
日期:2013.4
The heterobimetallic complex [Ir(COD)(SnCl3)Cl(mu-Cl)](2) catalyzes the aza-Friedel Crafts reaction of 1,3,5-trimethoxybenzene, as well as substituted indoles with N-sulfonyl aldimines leading to the formation of diarylamines and triarylmethanes in good yields. The symmetrical triarylmethanes were also obtained from diarylamines and suitable nucleophiles via simultaneous cleavage of sp(3) C-N bond and elimination of 1,3,5-trimethoxybenzene. (C) 2013 Elsevier Ltd. All rights reserved.
RUTHENIUM PORPHYRIN CATALYZED FRIEDEL–CRAFTS TYPE REACTION OF ARENES WITH IMINES
Cationic ruthenium porphyrin complex was found to be an efficient catalyst for the Friedel-Crafts type reaction of arenes with imines. The use of a structurally rigid tetradentate porphyrin as the equatorial ligand and weakly coordinating axial ligand is the key to bring out the catalytic reactivity of ruthenium for the reaction.
Palladium-catalyzed decarboxylative 1,2-addition of carboxylic acids to aldehydes or imines
作者:Yong Luo、Jie Wu
DOI:10.1039/c002052d
日期:——
The first example of palladium-catalyzed decarboxylative 1,2-addition of carboxylic acids to aldehydes or imines under mild conditions is described.