Various spiroindenyl-2-oxindoles have been synthesized in a one-pot reaction from isatin-derived propargylic alcohols with sterically hindered and electron-rich arenes such as 2-phenylindole and 1,3,5-trimethoxybenzene. The reaction involved montmorillonite K-10-catalyzed tandem Friedel-Crafts alkenylation and a following hydroarylation of an allene intermediate.

中文翻译：

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蒙脱土K-10催化串联Friedel-Crafts炔醇与位阻和富电子芳烃的炔丙基化/氢化芳基化反应，合成螺茚基-2-氧吲哚

一锅法反应中，衍生自靛红的炔丙醇与空间受阻且富电子的芳烃（例如2-苯基吲哚和1,3,5-三甲氧基苯）以一锅法合成了各种螺茚基-2-氧吲哚。该反应涉及蒙脱石K-10-催化的串联Friedel-Crafts烯基化和随后的烯丙基中间体的氢芳基化。