An expeditious synthesis of natural and unnatural disubstituted maleic anhydrides
作者:Mickaël Denancé、Estelle Banaszak、Mohammad Samadi
DOI:10.1016/j.tetlet.2006.08.073
日期:2006.10
the synthesis of natural and unnatural substituted maleic anhydrides based on the Barton radical decarboxylation is described. The radicals, generated by the photolysis of N-hydroxy-2-thiopyridone esters derived from succinic and alkyl acids reacted, respectively, with electron deficient olefin phenyl maleimide by a consecutive two-step radical addition, afforded the corresponding disubstituted maleic
描述了基于Barton自由基脱羧合成天然和非天然取代的马来酸酐的简便方法。由琥珀酸和烷基酸衍生的N-羟基-2-硫代吡啶酮酯的光解反应所产生的自由基分别通过连续的两步自由基加成反应与缺电子的烯烃苯基马来酰亚胺反应,得到相应的二取代马来酸酐1a – f。