Methyl 2-Benzoylamino-3-dimethylaminopropenoate in the Synthesis of Heterocyclic Systems. The Synthesis of Substituted 3-Benzoylamino-2<i>H</i>-pyran-2-ones
作者:Jurij Svete、Zvonko Čadež、Branko Stanovnik、Miha Tišler
DOI:10.1055/s-1990-26792
日期:——
5,6-Disubstituted 3-benzoylamino-2H-pyran-2-ones 3 are prepared either from 1,3-dicarbonyl compounds 1 and methyl 2-benzoyl-amino-3-dimethylaminopropenoate (2) in an one-step reaction, or from ethyl 2-acyl-3-dimethylaminopropenoates 5a,b or 2-(dimethylamino)methylene-1,3-diketones 5c,d and 5-oxo-2-phenyl-1,3-oxazole 6.
5,6-二取代的3-苯甲酰氨基-2H-吡営-2-酮类化合物3可以通过一步反应从1,3-二羰基化合物1和甲基2-苯甲酰氨基-3-二甲基氨基丙烯酸酯2制备,或者从乙基2-酰基-3-二甲基氨基丙烯酸酯5a,b或2-(二甲基氨基)亚甲基-1,3-二酮5c,d与5-氧代-2-苯基-1,3-噁唑6制备。