Phenazine radicalcations (PhRCs) were used for the first time as efficient metal-free catalysts for the oxidative homo- and cross-coupling of a variety of different amines. A series of functional PhRCs were prepared, characterized with X-ray diffraction, and their radical character was investigated with DFT calculations. They were tested as catalysts under neat conditions with low oxygen pressure
Direct Synthesis of Imines from <i>g</i><i>em</i>-Dibromomethylaryl Derivatives: Application to Unsymmetrically Substituted Bipyridine Frameworks
作者:Nicolas Weibel、Loïc J. Charbonnière、Raymond F. Ziessel
DOI:10.1021/jo020260u
日期:2002.11.1
from gem-dibromomethylaryl compounds and primary amines. The synthesis was applied to various aliphatic mono- and polyamines as well as to electron-rich anilines. The protocol was extended to 6-bromo-5'-dibromomethyl-2,2'-bipyridine to afford the corresponding imines. With n-propyl- and n-decylamine, further conversion, in three steps, to the corresponding 6-carboxy-5'-alkylaminomethyl-2,2'-bipyridine