Synthese de N-amino maléimides et d'anhydrides maléiques disubstitués à partir d'α-halogéno hydrazides. Etude du mécanisme de la réaction
作者:C. Florac、M. Baudy-Floc'h、A. Robert
DOI:10.1016/s0040-4020(01)85428-4
日期:1990.1
α-halohydrazides react with 2-amino pyridine to give symetrically substituted N-amino maleimides. We have shown that this reaction proceeds through the formation of 4-hydroxy imidazopyridines. This result open a new route to dissymetrically substituted N-amino maleimides. The hydrolysis of N-amino maleimides is a good route to substituted maleic anhydrides.
α-卤代酰肼与2-氨基吡啶反应,得到对称取代的N-氨基马来酰亚胺。我们已经表明该反应通过形成4-羟基咪唑并吡啶而进行。该结果为不对称取代的N-氨基马来酰亚胺开辟了一条新途径。N-氨基马来酰亚胺的水解是制备取代的马来酸酐的良好途径。