80531-13-1Relevant articles and documents
Transition-Metal-Free and Base-Promoted Carbon-Heteroatom Bond Formation via C-N Cleavage of Benzyl Ammonium Salts
Liu, Long,Tang, Yuanyuan,Wang, Kunyu,Huang, Tianzeng,Chen, Tieqiao
, p. 4159 - 4170 (2021/03/09)
A facile and general method for constructing carbon-heteroatom (C-P, C-O, C-S, and C-N) bonds via C-N cleavage of benzyl ammonium salts under transition-metal-free conditions was reported. The combination of t-BuOK and 18-crown-6 enabled a wide range of substituted benzyl ammonium salts to couple readily with different kinds of heteroatom nucleophiles, i.e. hydrogen phosphoryl compounds, alcohols, thiols, and amines. Good functional group tolerance was demonstrated. The scale-up reaction and one-pot synthesis were also successfully performed.
The palladium-catalyzed direct C3-cyanation of indoles using acetonitrile as the cyanide source
Feng, Kejun,Li, Qiang,Li, Yuanhua,Liu, Bifu,Liu, Min,Zhou, Yongbo
supporting information, p. 6108 - 6114 (2020/10/21)
The ligand-free palladium-catalyzed C3-cyanation of indoles via direct C-H functionalization was achieved. This protocol, utilizing CH3CN as a green and readily available cyanide source, produced the desired products in moderate to good yields through transition-metal-catalyzed C-CN bond cleavage. This journal is
General and efficient synthesis of 2,3-unsubstituted indoles catalyzed by acidic mesoporous molecular sieves
Sun, Nan,Hong, Lingfen,Huang, Fang,Ren, Hong,Mo, Weimin,Hu, Baoxiang,Shen, Zhenlu,Hu, Xinquan
, p. 3927 - 3933 (2013/06/27)
A general and efficient method for the synthesis of 2,3-unsubstituted indoles has been established by the intramolecular cyclization of N-benzyl 2-anilinoacetals. Acidic mesoporous molecular sieve (MCM-41-SO3H) has shown excellent catalytic activity on this transformation, and the 2,3-unsubstituted indoles bearing 7-substituent or strong electron-withdrawing substituents also could be achieved by this protocol. Moreover, the heterogeneous catalyst, MCM-41-SO3H, could be conveniently recovered and reused without obvious loss of the catalytic activity. This work will provide an economic and environmental-benign method for the construction of various indole derivatives.