本文主要研究以不對稱有機催化進行夫里德耳-夸夫特烷基化反應(organocatalytic asymmetric Friedel-Crafts alkylation reaction),透過各種吲哚衍生物在鹼性條件下生成所需中間體:烷基亞甲基假吲哚(alkylideneindolenine),在(硫)脲取代的金雞納生物鹼雙功能有機催化劑 ((thio)urea- based cinchona alkaloid bifunctional organocatalyst)雙重活化引導下,使富含電子(electron-rich)的酚類,建構具有選擇性的三級碳、四級碳立體中心,同時得到具掌性的吲哚衍生物,並且在通用性測試上最高達到鏡像超越值97%與產率99%。
Abstract Our purpose is to develop the organocatalytic asymmetric Friedel-Crafts alkylation reaction of electron-rich phenols to alkylideneindolenines generated in situ from arenesulfonylalkylindoles. These reactions were catalyzed by (thio)urea- based cinchona alkaloid bifunctional organocatalysts, producing chiral indole derivatives in yields (up to 99%) and enantioselectivites (up to 97%).