New Access to Oxazolopyridines via Hydroxyamidine Derivatives; Application to Quinolines
作者:Paul Caubère、Gérald Guillaumet、Ethel Garnier、Stéphanie Blanchard、Ivan Rodriguez、Christian Jarry、Jean-Michel Léger
DOI:10.1055/s-2003-41052
日期:——
Several 2-aryl and 2-heteroaryloxazolo[4,5-b]pyridines were synthesised in high yields from zwitterion or hydroxyamidine derivatives by heating in dimethylacetamide. These intermediates were generated via hetarynic reaction with the complex base NaNH2-t-BuONa (5:2). The same reactions were possible with quinoline derivatives.
通过在二甲基乙酰胺中加热,从齐聚物或羟基脒衍生物中高产合成了几种 2-芳基和 2-杂芳基恶唑并[4,5-b]吡啶。这些中间体是通过与络合碱 NaNH2-t-BuONa (5:2)发生热反应生成的。喹啉衍生物也可以发生同样的反应。