Transition Metals in Organic Synthesis, Part 91:¹ Palladium-Catalyzed Approach to 2,6-Dioxygenated Carbazole Alkaloids - First Total Synthesis of the Phytoalexin Carbalexin C
作者:Hans-Joachim Knölker、Marika Schmidt
DOI:10.1055/s-0029-1217810
日期:2009.9
The palladium(0)-catalyzed C-N bond formation and palladium(II)-catalyzed oxidative cyclization provide an efficient route to a series of 2,6-dioxygenated carbazole alkaloids including the first totalsynthesis of the phytoalexin carbalexin C.
钯 (0) 催化的 CN 键形成和钯 (II) 催化的氧化环化为一系列 2,6-二氧化咔唑生物碱提供了有效途径,包括植物抗毒素卡巴莱辛 C 的首次全合成。
Photoinduced Reduction of Nitroarenes and Tandem C–N Cross-Coupling with Haloarenes
作者:Haoshi Bao、Leifeng Wang
DOI:10.1021/acs.orglett.3c03656
日期:2023.12.15
photocatalytic C–N cross-coupling of nitroarenes with haloarenes has been developed using simple and cheap Ni(acac)2 as a cocatalyst. The reaction is confirmed as a stepwise process: (1) metal free photoinducedreduction of nitroarenes into aniline derivatives and (2) photo- and Ni-catalyzed C–N cross-coupling of anilines with haloarenes. The reaction conditions are simple and mild, giving high-value diarylamines
Acid-Free Synthesis of Carbazoles and Carbazolequinones by Intramolecular Pd-Catalyzed, Microwave-Assisted Oxidative Biaryl Coupling Reactions - Efficient Syntheses of Murrayafoline A, 2-Methoxy-3-methylcarbazole, and Glycozolidine
作者:Vellaisamy Sridharan、M. Antonia Martín、J. Carlos Menéndez
DOI:10.1002/ejoc.200900537
日期:2009.9
A mild and efficient methodology for the synthesis of oxygenated carbazoles from diarylamines under non-acidic conditions was developed, based on a palladium-catalyzed, microwave-assisted double C–H bond activation process. This new protocol was successfully applied to the synthesis of three naturally occurring carbazoles, namely murrayafoline A, 2-methoxy-3-methylcarbazole, and glycozolidine. The