Consecutive four-component synthesis of trisubstituted 3-iodoindoles by an alkynylation–cyclization–iodination–alkylation sequence
作者:Nadia Ledermann、Alae-Eddine Moubsit、Thomas J J Müller
DOI:10.3762/bjoc.19.99
日期:——
consecutive four-component reaction starting from ortho-haloanilines, terminal alkynes, N-iodosuccinimide, and alkyl halides in yields of 11–69%. Initiated by a copper-free alkynylation, followed by a base-catalyzed cyclizive indole formation, electrophilic iodination, and finally electrophilic trapping of the intermediary indole anion with alkyl halides provides a concise one-pot synthesis of 3-iodoindoles
抽象的 从邻卤代苯胺、末端炔烃、 N-碘代琥珀酰亚胺和烷基卤开始,通过连续的四组分反应生成了 19 种不同取代的 3-碘吲哚库,产率为 11-69%。由无铜炔基化引发,然后是碱催化环化吲哚形成、亲电碘化,最后用烷基卤化物亲电捕获中间吲哚阴离子,提供了 3-碘吲哚的简明一锅法合成。后者是铃木芳基化的有价值的底物,以四种衍生物的合成为例,其中一些在溶液和固态下都是蓝色发射体,收率良好。 Beilstein J. Org. Chem. 2023, 19, 1379–1385. doi:10.3762/bjoc.19.99