Synthesis of Benzisoxazolines by the Coupling of Arynes with Nitrones
摘要:
A variety of substituted benzisoxazolines have been synthesized by the [3 + 2] cycloaddition of nitrones and arynes. The reaction scope is broad, the reaction conditions are mild, and the process tolerates a variety of functional groups.
Iron-Catalyzed Cyclization of Nitrones with Geminal-Substituted Vinyl Acetates: A Direct [4 + 2] Assembly Strategy Leading to 2,4-Disubstituted Quinolines
作者:Mingbing Zhong、Song Sun、Jiang Cheng、Ying Shao
DOI:10.1021/acs.joc.6b01910
日期:2016.11.18
An iron-catalyzed intermolecular [4 + 2] cyclization of arylnitrones with geminal-substituted vinyl acetates was developed for the synthesis of 2,4-disubstituted quinolines in moderate to good yields with good functional group compatibilities. Preliminary mechanistic studies suggest a plausible iron-catalyzed C–H activation process under external-oxidant-free conditions.
Highly atom efficient synthesis of 2,2,4,5-tetrasubstituted 3(2<i>H</i>)-furanones having both hydroxyl and amino substituents
作者:Jesna Antony、Sumi P. Musthafa、Rakesh Natarajan、Sindhu Mathai、Karakkattu S. Devaky、John P. Rappai
DOI:10.1080/00397911.2022.2036347
日期:2022.2.16
Abstract We have developed a highly atom efficient synthesis of tetrasubstituted 3(2H)-furanones from easily accessible starting materials such as C,N-diarylaldonitrones and dibenzoylacetylene. Control experiments revealed that reaction of aldonitrones having electron-withdrawing groups on the C-aryl substituent in polar aprotic solvents exhibited high product selectivity while reaction temperature
摘要 我们已经开发出一种高效的四取代 3(2 H )-呋喃酮合成方法,该合成方法由容易获得的起始材料(如C,N-二芳基醛固酮和二苯甲酰基乙炔)构成。对照实验表明,在C-芳基取代基上具有吸电子基团的醛固酮在极性非质子溶剂中的反应表现出高产物选择性,而反应温度对产物收率和选择性的影响可忽略不计。