61843-43-4Relevant articles and documents
Corrigendum to: Aryl(triethyl)silanes for Biaryl and Teraryl Synthesis by Copper(II)-Catalyzed Cross-Coupling Reaction (Angew. Chem. Int. Ed., (2016), 55, (15787–15791), (10.1002/anie.201608667))
Komiyama, Takeshi,Minami, Yasunori,Hiyama, Tamejiro
, p. 8035 - 8035 (2017)
In this Communication, Table 3, entry 11, the correct product from the reaction of 2-(triethylsilyl)indole (6 b) with p-iodoanisole (4 a) was not 2-(p-methoxyphenyl)indole (7 ba) but N-(p-methoxyphenyl)indole [Eq. 1]. (Figure presented.) C2 arylation was achieved using substituted 2-(triethylsilyl)indoles. From the reaction of N-methyl-2-(triethylsilyl)indole with 4 a under standard conditions (reaction time was 22 h), N-methyl-2-(p-methoxyphenyl)indole was isolated in 52% yield after column chromatography [Eq. 2]. (Figure presented.) A corrected Supporting Information is provided along with this Corrigendum.
In Situ Preparation of Palladium Nanoparticles for C-2 Selective Arylation of Indoles in Agro-Waste Extract Based Mixed Solvents
Jin, Weiwei,Liu, Chenjiang,Liu, Tianxiang,Sun, Yajun,Wang, Bin,Wang, Rui,Xia, Yu,Zhang, Yonghong
supporting information, p. 2470 - 2473 (2021/06/25)
An efficient and practical method for the in situ generation of palladium nanoparticles was successfully established in a water extract of pomelo peel ash. The produced palladium nanoparticles were characterized by energy-dispersive X-ray spectroscopy elemental mapping, field emission scanning electron microscopy, high-resolution transmission electron microscope, X-ray powder diffraction, and showed high catalytic activity for selective C-2 arylation of indoles. A series of 2-arylindoles were smoothly installed in moderate to good yields through the direct palladium-catalyzed cross-coupling reactions of indoles and iodoarenes without external ligand, base, oxidant, and preinstallation directing group.
Synthesis of 2-Substituted Benzothio(seleno)phenes and Indoles via Ag-Catalyzed Cyclization/Demethylation of 2-Alkynylthio(seleno)anisoles and 2-Alkynyldimethylanilines
Cai, Tao,Feng, Chengjie,Shen, Fangqi,Bian, Kejun,Wu, Chunlei,Shen, Runpu,Gao, Yuzhen
, p. 653 - 656 (2020/12/23)
An Ag-catalyzed cyclization/demethylation of 2-alkynylthio(seleno)anisoles and 2-alkynyldimethylanilines is described and applied for the construction of valuable benzothio(seleno)phenes as well as indoles. Various 2-substituted benzothio(seleno)phenes and indoles were obtained in good to excellent yields under mild reaction conditions with low catalyst loading. An application of this new method is also exemplified with a concise synthesis of a bioactive molecule precursor. Furthermore, a conceivable reaction mechanism is proposed with supports from isotope-exchange experiments.