Synthesis of 4-amino-1,2,3,4-tetrahydropyridine derivatives by intramolecular nucleophilic addition of tertiary enamides to in-situ generated imines
作者:Shuo Tong、Xu Yang、De-Xian Wang、Liang Zhao、Jieping Zhu、Mei-Xiang Wang
DOI:10.1016/j.tet.2012.05.108
日期:2012.8
reactivity of stable tertiaryenamides in nucleophilic addition reaction with various in-situ generated imines was explored. Under very mild conditions, formyl-bearing tertiaryenamides reacted with both aromatic and aliphatic amines to form imine intermediates. In the absence or presence of p-toluenesulfonic acid as a catalyst, intramolecular nucleophilic addition of enamide to imine functionality
Exploring tertiary enamides as versatile synthons in organic synthesis
作者:Mei-Xiang Wang
DOI:10.1039/c4cc10327k
日期:——
Tertiary enamides have long been thought of as stable and marginally valuable enamine variants in synthesis. This notion has been challenged, however, in recent years. Enabling the regulation of the cross-conjugation system of the tertiary enamides has been successfully shown to enhance delocalization of the nitrogen lone-pair electrons into a carbon-carbon double, thereby reinvigorating the enaminic