I<sub>2</sub>/TBHP-Catalyzed Chemoselective Amination of Indoles
作者:Zhong-Jian Cai、Shun-Yi Wang、Shun-Jun Ji
DOI:10.1021/ol4023936
日期:2013.10.18
A novel I-2/TBHP-mediated direct oxidative diamination reaction of indoles with anilines was developed. The reaction proceeded smoothly under aqueous and open air reaction conditions. This protocol provides a practical synthetic method for the synthesis of Tryptanthrin and the construction of N-C3 linked pyrrolidinoindolines which is the core structure of Psychotrimine.
Synthesis of 3-Iminoindol-2-amines and Cyclic Enaminones via Palladium-Catalyzed Isocyanide Insertion-Cyclization
A palladiurn-catalyzed isocyanide insertion-cyclization using low-cost and readily accessible 2-haloanilines, 2-iodophenylethanones, and isocyanides for efficient synthesis of 3-iminoindol-2-amine and cyclic enaminone derivatives has been developed. The method features low-cost and readily accessible starting materials, reliable scalability, and bond-forming efficiency as well as simple one-pot operation, which makes this strategy highly attractive. A reasonable mechanism for forming 3-iminoindol-2-amine involved double isocyanide insertion/cyclization process: is proposed.
Cardellini Liberato, Carloni Patricia, Damiani Elisabetta, Greci Lucedio,+, J. Chem. Soc. Perkin Trans. 2, (1994) N 7, S 1589-1596
Synthesis of N-aryl-3-(arylimino)-3H-indol-2-amines via hypervalent iodine promoted oxidative diamination of indoles
作者:Xinpeng Jiang、Guizhou Li、Chuanming Yu
DOI:10.1016/j.tetlet.2018.03.015
日期:2018.4
A direct and fast oxidative diamination of substituted indoles with anilines was realized by using 1-fluoro-1,2-benziodoxol-3(1H)-one under mild conditions. This protocol could provide a wide range of synthetically valuable N-aryl-3-(arylimino)-3H-indol-2-amine derivatives under peroxide-free conditions within 30 min in up to 91% yields.