Active methylene compounds and nitro derivatives react with 3-(1-arylsulfonylalkyl)-indoles in the presence of potassium fluoride on basic alumina at room temperature leading to the corresponding adducts in good yields. Under basic conditions, sulfonylindoles suffer elimination of arenesulfinic acid leading to an intermediate vinylogous imine that promptly adds stabilized carbanions. The obtained 3-indolyl
在室温下,在碱性氧化铝上,在
氟化
钾存在下,活性亚甲基化合物和硝基衍
生物与3-(1-芳基磺酰基烷基)-
吲哚反应,从而以高收率得到相应的加合物。在碱性条件下,磺酰
吲哚消除了
芳烃亚
磺酸,生成了中间的
乙烯基亚胺,该
亚胺可迅速添加稳定的碳负离子。所获得的3-
吲哚基衍
生物是用于合成基于
吲哚的
生物碱和
氨基酸的关键中间体。