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。
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。
Bis(dibenzylideneacetone)palladium(0)/<i>tert-</i>Butyl Nitrite- Catalyzed Cyclization of<i>o</i>-Alkynylanilines with<i>tert-</i>Butyl Nitrite: Synthesis and Applications of Indazole 2-Oxides
作者:Gopal Chandru Senadi、Ji-Qi Wang、Babasaheb Sopan Gore、Jeh-Jeng Wang
DOI:10.1002/adsc.201700456
日期:2017.8.17
An efficient method for the synthesis of 1‐benzyl/arylindazole 2‐oxides via a bis(dibenzylideneacetone)palladium(0) [Pd(dba)2]/tert‐butyl nitrite (TBN)‐catalyzed reaction of o‐alkynylaniline derivatives with TBN is reported. The overall transformation involves the formation of three new bonds via N‐nitrosation (N–NO), 5‐exo‐dig cyclization (C–N) and oxidation (C=O). The notable features are the mild
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。
A copper(<scp>ii</scp>)-catalyzed annulative formylation of <i>o</i>-alkynylanilines with DMF: a single-step strategy for 3-formyl indoles
作者:Balaji Ganesan、Gopal Chandru Senadi、Bing-Chun Guo、Min-Yuan Hung、Wei-Yu Lin
DOI:10.1039/c8ra09214a
日期:——
developed for synthesizing multisubstituted 3-formyl indole scaffolds. This one-pot reaction proceeds through a cascade 5-endo-dig cyclization followed by formylation to construct 1,2-disubstituted 3-formyl indoles. The key aspects of this synthesis method are the broad substrate scope (with 38 examples), and well tolerating various functional groups. In addition, a detailed mechanism has been proposed, where