Synthesis of 1-(pyridyl, quinolyl, and isoquinolyl)azulenes by Reissert–Henze type reaction
作者:Taku Shoji、Kazuyuki Okada、Shunji Ito、Kozo Toyota、Noboru Morita
DOI:10.1016/j.tetlet.2010.07.090
日期:2010.9
Azulene derivatives reacted with N-oxide of several heterocycles in the presence of trifluoromethanesulfonic anhydride (Tf2O) to afford 1-(pyridyl, quinolyl, and isoquinolyl)azulenes in good yield, respectively. In the case of the reaction with the 1-azulenyl methyl sulfide (12), 1,1′-biazulene derivative 13 was obtained under the similar reaction conditions. The first synthesis of unsymmetrical 1
在三氟甲磺酸酐(Tf 2 O)存在下,Azulene衍生物与几个杂环的N-氧化物反应,分别以良好的产率得到1-(吡啶基,喹啉基和异喹啉基)azulenes。在与1-氮杂烯基甲基硫化物(12)反应的情况下,在相似的反应条件下获得1,1'-二氮杂烯衍生物13。还通过我们的新制备方法,在Tf 2 O存在下与吡啶反应进行亲电吡啶基化之后,通过我们的新制备方法建立了不对称的1,3-二(吡啶基)ul唑衍生物的第一个合成方法。