Enantioselective inhibition of reverse transcriptase (RT) of HIV-1 by non-racemic indole-based trifluoropropanoates developed by asymmetric catalysis using recyclable organocatalysts
Enantioselective Friedel-Crafts alkylation of indoles with trifluoropyruvates catalyzed by chiral Cu(II) complex bearing binaphthyl-proline hybrid ligands
作者:Chao Yao、Jiaqi Hou、Qihang Cai、Yaoqi Chen、Chao Wang、Jiemian Liang、Zilin Jiao、Lin Li、Yue-Ming Li
DOI:10.1016/j.tet.2024.133874
日期:2024.3
A mild and efficient catalyst system for asymmetric Friedel-Crafts alkylation of indoles with trifluoropyruvates was reported. The chiral ligands took the advantages of both the proline and the binaphthyl moieties, and the in situ prepared Cu(II) catalyst showed good substrate tolerance in the reactions. Indoles bearing different substituents could be tolerated, and the desired products could be obtained
Enhanced efficiency of recyclable C3-symmetric cinchonine-squaramides in the asymmetric Friedel–Crafts reaction of indoles with alkyl trifluoropyruvate
作者:Xin Han、Bin Liu、Hai-Bing Zhou、Chune Dong
DOI:10.1016/j.tetasy.2012.08.015
日期:2012.10
The highly enantioselective Friedel-Crafts reaction of indoles with trifluoropyruvate catalyzed by a C-3-symmetric cinchonine-squaramide is reported. A wide variety of trifluoromethylated indole derivatives were obtained in high yields and with excellent enantioselectivities (99% and up to > 99% ee). Moreover the C-3 catalyst can be easily recovered and was used five times. (C) 2012 Elsevier Ltd. All rights reserved.