Iron-Catalyzed CC Bond Cleavage and CN Bond Formation
作者:Wenjuan Li、Xiaojian Zheng、Zhiping Li
DOI:10.1002/adsc.201200324
日期:2013.1.14
A novel approach for CNbondformation was developed by iron‐catalyzed CCbond cleavage. Anilines and sulfonamides reacted smoothly with 2‐substituted 1,3‐diphenylpropane‐1,3‐diones to afford N‐alkylation products, in which the 1,3‐dicarbonyl group acts as a leaving group in the presence of an iron catalyst. The reversible CCbond cleavage plays a driving force to give the thermodynamically stable
Phosphotungstic Acid Catalyzed Amidation of Alcohols
作者:Guan-Wu Wang、Ye-Bing Shen、Xue-Liang Wu
DOI:10.1002/ejoc.200800413
日期:2008.9
allylic, and simple aliphatic alcohols with sulfonamides, benzamide, and 4-nitroaniline in the presence of 12-phosphotungstic acid as an efficient, eco-friendly, cheap, and air- and moisture-tolerant catalyst for the construction of C–N bonds has been investigated. The amine derivatives were obtained in good yields (up to 98 %). The reusable nature of the 12-phosphotungstic acid makes this protocol more