Synthesis of 3,4-Diarylsubstituted Maleic Anhydride/Maleimide via Unusual Oxidative Cyclization of Phenacyl Ester/Amide
作者:Vijaya Raghavan Pattabiraman、Srinivas Padakanti、Venugopal Rao Veeramaneni、Manojit Pal、Koteswar Rao Yeleswarapu
DOI:10.1055/s-2002-31901
日期:——
A simple and general method has been developed for the synthesis of 3,4-diarylsubstituted maleic anhydride and maleimide through tandem cyclization and oxidation reaction of phenacyl ester or amide. A wide variety of phenacyl esters or amides was treated with DBU under oxygen atmosphere to give the expected compounds in good to excellent yield. Mechanism of the reaction and application of the methodology
开发了一种简单通用的方法,通过苯甲酰酯或酰胺的串联环化和氧化反应合成3,4-二芳基取代的马来酸酐和马来酰亚胺。多种苯甲酰酯或酰胺在氧气气氛下用 DBU 处理,得到预期的化合物,收率良好至极好。讨论了反应机理和方法学的应用。