Highly Efficient and Expedient Synthesis of 5-Hydroxy-1<i>H</i>-pyrrol-2-(5<i>H</i>)-ones from FeCl<sub>3</sub>-Catalyzed Tandem Intramolecular Enaminic Addition of Tertiary Enamides to Ketones and 1,3-Hydroxy Rearrangement
作者:Luo Yang、Chuan-Hu Lei、De-Xian Wang、Zhi-Tang Huang、Mei-Xiang Wang
DOI:10.1021/ol101607z
日期:2010.9.3
Catalyzed by FeCl3 under very mild conditions, tertiary enamides underwent a highly efficient intramolecular enaminic addition reaction to the ketonic carbonyls followed by 1,3-hydroxy rearrangement to produce 5-hydroxy-1H-pyrrol-2(5H)-ones in excellent yields.
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