New Regiospecific Synthesis of 2-Trifluoromethyl-1,5 Diazapentadiene Compounds and of 2-Trifluoromethylquinolines, Their Cyclization Products
摘要:
2-Trifluoromethylquinolines 5 are synthesized in high yields using a perfluoroalkylated gemiodoacetoxy derivative 3 and arylamines 4. The intermediate of this reaction, 2-trifluoromethyl-1,5-diazapentadiene compound 6, was isolated. The procedures are easy, and yields are in general high. This sequence represents a valuable new synthesis of substituted 2-trifluoromethylquinolines and of 2-trifluoromethyl-diazapentadienes (vinamidine compounds).
The reaction of iminium triflates 2 and 7 with various aromaticamines were investigated. The 2-Rf-substituted quinolines 3 and 8 were prepared in excellent yields by the reaction of 2 and 7, respectively, with substituted anilines. The reactions of 2 and 7 with diarylamines proceeds, suprisingly, to afford the corresponding 3-Rf-substituted cinnamaldehydes 4 and 9.
2-Position-Selective C–H Perfluoroalkylation of Quinoline Derivatives
作者:Takahiro Shirai、Motomu Kanai、Yoichiro Kuninobu
DOI:10.1021/acs.orglett.8b00339
日期:2018.3.16
We developed 2-position-selective, direct C–H trifluoromethylation, pentafluoroethylation, and heptafluoropropylation of quinolinederivatives. Regioselective transformation was achieved without derivatization of the quinolines. The reaction proceeded at room temperature with high functional group tolerance, even in gram scale. Notably, the reaction was applicable to substrates containing a functional
[EN] N-AROYL CYCLIC AMINES AS OREXIN RECEPTOR ANTAGONISTS<br/>[FR] AMINES CYCLIQUES N-AROYLE UTILISEES COMME ANTAGONISTES DU RECEPTEUR D'OREXINE
申请人:GLAXO GROUP LTD
公开号:WO2004026866A1
公开(公告)日:2004-04-01
This invention relates to N-aroyl cyclic amine derivatives and their use as pharmaceuticals.
这项发明涉及N-芳酰环氨基衍生物及其作为药物的用途。
2-(Trifluoromethyl)quinolines from anilines: A novel mode of isomerization and cyclization
作者:Holger Keller、Manfred Schlosser
DOI:10.1016/0040-4020(96)00168-8
日期:1996.3
in the presence of phosphoryl trichloride, the resulting 4-anilino-1,1,1-trifluorobut-3-en-2-ones undergo an N → ortho shift of the side chain followed by cyclization and dehydration to afford 2-(trifluoromethyl)quinolines.
Synthesis of substituted 1-trifluoromethyl and 1-perfluoroalkyl-3-(arylamino)prop-2-en-1-one: advances in the mechanism of Combes 2-trifluoromethyl and 2-perfluoroalkyl quinolines synthesis
作者:Salem El Kharrat、Philippe Laurent、Hubert Blancou
DOI:10.1016/j.tet.2013.12.073
日期:2014.2
We report a new synthesis and our study of the mechanism of formation of substituted 1-trifluoromethyl and 1-perfluoroalkyl-3-(phenylamino)prop-2-en-1-one starting from 3-(R-phenoxy)-3-perfluoroalkyl-prop-2-enals and arylamines. Reactivity study of the intermediates confirmed that 3-perfluoroalkyl-N,N'-diphenyl-1,5-diazapentadienes are the synthetic intermediates of the synthesis of 2-perfluoroalkylquinolines. The mechanism of the reaction of 1-trifluoromethyl and 1-perfluoroalkyl-3-(phenylamino)prop-2-en-1-one with POCl3 was studied. To our knowledge this is the first detection and isolation of N,N'-diaryldiazapentadiene derivatives as intermediates in the Combes F-alkyl substituted quinoline synthesis starting from enaminoketones. Finally, we succeeded isolating and identifying unsymmetrically substituted 2-perfluorolakyldiazapentadiene. (C) 2014 Elsevier Ltd. All rights reserved.