An efficient copper-catalyzed method for the synthesis of quinolinones, pyridinones, and heteroannulated pyridinones via cascade reactions of substituted 2-iodo-, 2-bromo-, and 2-chlorobenzocarbonyls with 2-arylacetamides is reported. The protocol works well for the reaction of most of the 2-iodo-, 2-bromo- and 2-chlorobenzocarbonyls with 2-arylacetamides. copper iodide - diamines - cascade reactions
Domino Aldol-SNAr-Dehydration Sequence for [3+3] Annulations to Prepare Quinolin-2(1H)-ones and 1,8-Naphthyridin-2(1H)-ones
作者:Kwabena Fobi、Ebenezer Ametsetor、Richard A. Bunce
DOI:10.3390/molecules28155856
日期:——
2-fluorobenzaldehyde derivatives activated toward SNAr reaction by an electron-withdrawing substituent (NO2, CN, CF3, CO2Me) at C5 to prepare 3,6-disubstituted quinolin-2(1H)-ones. Additionally, 3-substituted 1,8-naphthyridin-2(1H)-ones have been similarly derived from 2-fluoronicotinaldehyde. Fifteen examples are reported, and two possible mechanistic scenarios are presented and discussed.
Iron-catalyzed synthesis of substituted 3-arylquinolin-2(1H)-ones via an intramolecular dehydrogenative coupling of amido-alcohols
作者:Léo Bettoni、Nicolas Joly、Inès Mendas、Matteo Maria Moscogiuri、Jean-François Lohier、Sylvain Gaillard、Albert Poater、Jean-Luc Renaud
DOI:10.1039/d4ob00649f
日期:——
Here we report an iron-complex-catalyzed synthesis of various mono- and di-substituted quinolin-2(1H)-ones achieved via the intramolecular acceptorless dehydrogenative cyclization of amido-alcohols. This approach for the synthesis of N-heterocycles has provided access to underdescribed disubstituted quinolinones and represents an alternative to the well-known palladium-catalyzed coupling reactions
在这里,我们报道了通过酰胺醇的分子内无受体脱氢环化实现的各种单取代和双取代的喹啉-2(1 H )-酮的铁络合物催化合成。这种合成 N-杂环的方法提供了获得未描述的二取代喹啉酮的途径,并且代表了众所周知的钯催化偶联反应的替代方案。