Highly regioselective organo photocatalysis of 4CzIPN (1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene) for the arylation of 2H-indazole is demonstrated.
作者:Stephan A. Ohnmacht、Andrew J. Culshaw、Michael F. Greaney
DOI:10.1021/ol902537d
日期:2010.1.15
The efficient palladium-catalyzed synthesis of a range of substituted 2H-Indazoles via C−H arylation is reported. Reactions are performed on water and provide a direct and mild route toward 2,3-diaryl indazoles of widespread biological significance.
Continuous‐Flow Visible Light Organophotocatalysis for Direct Arylation of 2
<i>H</i>
‐Indazoles: Fast Access to Drug Molecules
作者:Shinde Vidyacharan、Bandaru T. Ramanjaneyulu、Seungwook Jang、Dong‐Pyo Kim
DOI:10.1002/cssc.201900736
日期:2019.6.21
A continuous‐flow homogeneous photocatalytic method has been devised for the direct arylation of 2H‐indazoles. This visible‐light‐promoted approach directly accesses a wide range of structurally diverse C3‐arylated scaffolds of biological interest in a fast (1 min), single‐step reaction by using eosin Y as an organophotocatalyst. Furthermore, a microreactor technology is also employed for the fast
Direct Access to Acylated Azobenzenes via Pd-Catalyzed C–H Functionalization and Further Transformation into an Indazole Backbone
作者:Hongji Li、Pinhua Li、Lei Wang
DOI:10.1021/ol303434n
日期:2013.2.1
Azobenzenes were readily acylated at the 2-position through a Pd-catalyzed C-H functionalization from simple aromatic azo compounds and aldehydes in good yields. The obtained acylated azobenzenes could be efficiently converted into the corresponding indazole derivatives in nearly quantitative yields.