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A Palladium-Catalyzed Ullmann Cross-Coupling/Reductive Cyclization Route to the Carbazole Natural Products 3-Methyl-9H-carbazole, Glycoborine, Glycozoline, Clauszoline K, Mukonine, and Karapinchamine A

Yan, Qiao; Gin, Emma; Wasinska-Kalwa, Malgorzata; Banwell, Martin; Carr, Paul D


The title natural products 2-7 have been prepared by reductive cyclization of the relevant 2-arylcyclohex-2-en-1-one (e.g. 20) to the corresponding tetrahydrocarbazole and dehydrogenation (aromatization) of this to give the target carbazole (e.g. 4). Compounds such as 20 were prepared using a palladium-catalyzed Ullmann cross-coupling reaction between the appropriate 2-iodocyclohex-2-en-1-one and o-halonitrobenzene.

CollectionsANU Research Publications
Date published: 2017
Type: Journal article
Source: Journal of Organic Chemistry
DOI: 10.1021/acs.joc.7b00044


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