An Easy Access to 2-Substituted Azulenes from Azulene-2-boronic Acid Pinacol Ester
作者:Toshihiro Murafuji、Yoshikazu Sugihara、Masayuki Fujinaga、Kouichi Suetake、Kazuhiro Gyoji、Kei Kurotobi
DOI:10.1055/s-0028-1083224
日期:2008.12
Azulene-2-boronic acid pinacol ester was conveniently transformed into 2-substituted azulenes bearing carboxyl, formyl, ester, or amino groups, which are difficult to access by conventional methods. Furthermore, the azulene-2-carboxylic acid thus synthesized was subjected to the Ugi four-component condensation to obtain a dipeptide-type product containing an azulene skeleton.
利用阿杂蒽-2-硼酸频哪醇酯能够方便地转化为难以通过常规方法获得的具有羧基、醛基、酯基或氨基的2-取代阿杂蒽衍生物。此外,通过上述合成的阿杂蒽-2-羧酸进一步进行Ugi四组分缩合反应,获得了一种含有阿杂蒽骨架的二肽型产物。