A copper-catalyzed direct C–H chalcogenation of N-aryl-azaindoles with disulfides is described.
一种铜催化的直接C-H硫砜化反应,用于N-芳基-氮杂吲哚与二硫化物的反应。
Lewis acid-mediated cross-coupling reaction of 7-azaindoles and aldehydes: Cytotoxic evaluation of C3-linked bis-7-azaindoles
作者:Suk Hun Lee、Kunyoung Kim、Yeong Uk Jeon、Amit Kundu、Prasanta Dey、Jong Yeon Hwang、Neeraj Kumar Mishra、Hyung Sik Kim、In Su Kim
DOI:10.1016/j.tetlet.2019.150974
日期:2019.8
3′-bis-7-indolylmethane derivatives is important for their further development as pharmaceutical compounds and other synthetic purposes. Herein, we describe the zinc- or acid-mediated cross-coupling reaction of 7-azaindoles with aldehydes, such as paraformaldehyde, alkyl aldehydes, aryl aldehydes, enal, and α-ketoaldehyde, providing the corresponding C3-linked bis-7-azaindole derivatives, which are a crucial class
Diazo compounds play an important role as a coupling partner in the synthesis of unique π-conjugated 7-azaindole derivatives via rhodium(III)-catalyzed double C–H activation/cyclization.
An unexpected rhodium-catalyzed regioselective C–H chlorination of 7-azaindoles was developed using 1,2-dichloroethane (DCE) as a chlorinating agent and 7-azaindole as the directing group. This protocol provides an efficient access to ortho-chlorinated azaindoles with operational simplicity, good functional group tolerance, and a wide substrate scope.
to 7-azaindoles is described with disulfides and diselenides under air. The thioether can be readily oxidized to sulfoxide and sulfone. The use of less expensive Ru-catalysis, substrate scope and scale-up are the important practical features. Graphical AbstractRu-catalyzed ortho-selective C-H coupling of arenes tethered to 7-azaindoles with disulfides and diselenides has been accomplished under air.