Selective trifluoromethylation and alkynylation of tetrahydroisoquinolines using visible light irradiation by Rose Bengal
作者:Weijun Fu、Wenbo Guo、Guanglong Zou、Chen Xu
DOI:10.1016/j.jfluchem.2012.05.009
日期:2012.8
convenient and efficient method for oxidative coupling of tetrahydroisoquinoline derivatives with trimethyl(trifluoromethyl)silane and terminalalkynes to 1-trifluoromethylated or 1-alkynylated tetrahydroisoquinolines via CH activation was developed using visible light irradiation. The protocol uses Rose Bengal as the catalyst, air as terminal oxidant, and the trifluoromethylation or alkynylation was selectively
Copper-catalyzed oxidative trifluoromethylation of benzylic sp3 C–H bond adjacent to nitrogen in amines
作者:Hiromasa Mitsudera、Chao-Jun Li
DOI:10.1016/j.tetlet.2011.02.038
日期:2011.4
Copper-catalyzed trifluoromethylation via oxidative sp(3) C-H activation at the alpha-position of nitrogen in tetrahydroisoguinoline derivatives using DDQ and Ruppert-Prakash reagent has been successfully achieved. The reaction of various amines gave the corresponding trifluoromethylated products in 15-90% yields under mild conditions. (C) 2011 Elsevier Ltd. All rights reserved.
Benzoyl peroxide (BPO)-promoted oxidative trifluoromethylation of tertiary amines with trimethyl(trifluoromethyl)silane
作者:Lingling Chu、Feng-Ling Qing
DOI:10.1039/c0cc01073a
日期:——
transition-metal-free reaction conditions was developed. Various 1-trifluoromethylated tetrahydroisoquinoline derivatives were prepared by employing this method. It constitutes the first example of direct trifluoromethylation of tertiary amines.