Some indolizine derivatives having (2-cyanoethyl)thio or (2-ethoxycarbonylethyl)thio group at the 2-position were prepared in moderate to good yields starting from the corresponding pyridinium 1-(thiocarbonyl)methylides. The treatment of these indolizines with a strong base such as potassium t-butoxide in N,N-dimethylformamide (DMF) gave smoothly title compounds, 2-indolizinethiols, with the elimination
从相应的
吡啶鎓1-(
硫代羰基)
甲基化物开始,以中等至良好的产率制备了一些在2-位具有(2-
氰基乙基)
硫基或(2-乙
氧基羰基乙基)
硫基的
吲哚嗪衍
生物。用强碱如
叔丁醇钾在
N,N-二甲基甲酰胺 (
DMF) 中处理这些
吲哚腙,可顺利得到标题化合物 2-
吲哚腙硫醇,同时去除
丙烯腈或
丙烯酸乙酯。