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.
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