2,5-Diamide-Substituted Five-Membered Heterocycles: Challenging Molecular Synthons
作者:Chiara Fabbro、Simone Armani、Laure-Elie Carloni、Federica De Leo、Johan Wouters、Davide Bonifazi
DOI:10.1002/ejoc.201402654
日期:2014.9
We describe synthetic routes for preparing previously unknown 2,5-diamide-substituted five-membered heterocycles based on the thiophene, pyrrole, and furan ring systems by exploiting Curtius-like rearrangement reactions. Conformation analysis of the 2,5-diamidothiophene derivatives identified a “closed” conformation, in which the two carbonyl O atoms are in close contact with the thiophene S atom.
我们描述了基于噻吩、吡咯和呋喃环系统通过利用类库尔蒂斯重排反应制备以前未知的 2,5-二酰胺取代的五元杂环的合成路线。2,5-二氨基噻吩衍生物的构象分析确定了一个“闭合”构象,其中两个羰基 O 原子与噻吩 S 原子紧密接触。