Catalyst‐free oxidative [3+2]‐annulation of (2‐nitroethene‐1,1‐diyl)bis(methylsulfane) and pyridinium ylides: Efficient synthesis of (methylsulfanyl)indolizines heterocycles
A facile and efficient protocol has been developed for the synthesis of (methylsulfanyl)indolizine derivatives via oxidative [3+2]-annulation of bis(methylthio)-2-nitroethylen(BMTNE) and pyridinium ylides under K2CO3. The target products could be obtained in moderate to good yields.
通过双(甲硫基)-2-硝基乙烯(BMTNE)和吡啶叶立德在K 2 CO 3下的氧化[3+2]环化,开发了一种简便有效的方案,用于合成(甲基硫基)中氮茚衍生物。可以以中等至良好的产率获得目标产物。
TOMINAGA, YOSHINORI;SHIROSHITA, YOSHIHIDE;HOSOMI, AKIRA, J. HETEROCYCL. CHEM., 25,(1988) N, C. 1745-1749