One-Pot Approach to 1,2-Disubstituted Indoles via Cu(II)-Catalyzed Coupling/Cyclization under Aerobic Conditions and Its Application for the Synthesis of Polycyclic Indoles
derivatives were efficiently and facilely synthesized from 2-alkynylanilines and boronic acids. 2-(2-Bromoaryl)-1-aryl-1H-indoles, which were selectively generated in one pot under the Cu catalysis, afforded the indolo[1,2-f]phenanthridines via Pd-catalyzed intramolecular direct C(sp2)–H arylation. The one-pot tandem approaches to the polycyclic indole derivatives were also successfully achieved.
通过Cu(II)催化的多米诺骨牌偶联/环化工艺已经开发出一种简单的1,2-二取代的吲哚组装体。在有氧条件下,可以从2-炔基苯胺和硼酸有效地合成各种1,2-二取代的吲哚衍生物。在铜催化下在一锅中选择性生成的2-(2-溴芳基)-1-芳基-1 H-吲哚通过Pd催化的分子内直接C(sp 2)提供吲哚[1,2- f ]菲啶)–芳基化。一锅串联方法也成功地实现了多环吲哚衍生物。
Selective arylation/annulation cascade reactions of 2-alkynylanilines with diaryliodonium salts
作者:Ying Duan、Yanliang Yang、Xiaoyu Dai、Dongmi Li
DOI:10.1016/s1872-2067(16)62522-6
日期:2016.11
Abstract An efficient Cu catalyzed selective arylation/annulation cascade reaction of 2-alkynylanilines with diaryliodonium salts was developed. This reaction was selective to N-arylation instead of C-arylation, which provides a simple synthetic method for N-aryl indoles.
摘要 开发了一种有效的 Cu 催化的 2-炔基苯胺与二芳基碘鎓盐的选择性芳基化/环化级联反应。该反应对N-芳基化而不是C-芳基化具有选择性,为N-芳基吲哚提供了一种简单的合成方法。