Cu(TFA)2-Catalyzed Oxidative Tandem Cyclization/1,2-Alkyl Migration of Enamino Amides for Synthesis of Pyrrolin-4-ones
摘要:
A novel Cu(TFA)(2)-catalyzed oxidative tandem cyclization/1,2-alkyl migration of readily available enamino amides for the synthesis of pyrrolin-4-ones has been developed. The reaction tolerates a wide range of functional groups and is a reliable method for the rapid synthesis of substituted pyrrolin-4-ones in high yields under mild conditions.
Lewis Acid-Mediated [3+3] Annulation for the Construction of Substituted Pyrimidine and Pyridine Derivatives
作者:Yao Zhou、Zhonghe Tang、Qiuling Song
DOI:10.1002/adsc.201601386
日期:2017.3.20
A direct and single‐step procedure towards substituted pyrimidine and pyridine derivatives via Lewis acid‐promoted [3+3] annulation between 3‐ethoxycyclobutanones and enamines or amidines is presented. Diverse substituted pyrimidine and pyridine derivatives were obtained in good to high yields with a wide substrate scope.
Microwave-Mediated Domino Reactions in Dry Medium. Preparation of Dihydropyridinones and Pyridinones Structurally Related to Hantzsch Esters.
作者:Jean Jacques Vanden Eynde、Nadège Labuche、Yves Van Haverbeke
DOI:10.1080/00397919708007288
日期:1997.11
Abstract Microwave irradiation of mixtures of 4-arylmethylene-2-phenyloxazol-5(4H)-ones and enaminocarbonyl compounds, in the absence of solvent, affords dihydropyridinone derivatives in quantitative yields. From 4-ethoxymethylene-2-phenyloxazol-5(4H)one and enaminocarbonyl compounds, pyridinone derivatives are obtained.
Synthesis of Tetrasubstituted NH Pyrroles and Polysubstituted Furans via an Addition and Cyclization Strategy
作者:Zheng-Hui Guan、Liang Li、Mi-Na Zhao、Zhi-Hui Ren、Jianli Li
DOI:10.1055/s-0031-1289993
日期:2012.2
enamino esters with nitroolefins provides a straightforward and general method for the synthesis of tetrasubstituted NH pyrroles. This novel method tolerates a wide range of functionality, and allows for rapid elaboration of the nitroolefins into a variety of substituted pyrroles in good yields. Further, an efficient KOAc-promoted addition and cyclization protocol toward substituted furans has been
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Formation of RSCl/ArSeCl and Their Oxidative Coupling with Enaminone Derivatives Under Transition‐metal Free Conditions
作者:Zhenhua Shang、Qingyu Chen、Linlin Xing、Yilin Zhang、Laura Wait、Yunfei Du
DOI:10.1002/adsc.201900940
日期:2019.11.5
The reaction of diorganyl disulfides or diselenides with PhICl2 in DMF at room temperature led to the in situ formation of the reactive organosulfenyl chloride (RSCl) or selenenyl chloride (ArSeCl), which reacted with enaminone compounds to afford a series of α‐thioenaminones or α‐selenylenaminones, respectively, including the bioactive inhibitor for Cdc25B and its analogue, via the intermolecular