An ionic liquid as reaction medium for the synthesis of halo-containing β-enaminones at room temperature
作者:Marcos A. P. Martins、Emerson A. Guarda、Clarissa P. Frizzo、Mara R. B. Marzari、Dayse N. Moreira、Nilo Zanatta、Helio G. Bonacorso
DOI:10.1007/s00706-008-0923-3
日期:2008.11
, Et , Bu , allyl, tert -amyl, CH2CH2OH, Bn , Ph ] were synthesized using the ionic liquid [bmim]BF4 at roomtemperature. It is demonstrated that this ionic liquid is a reaction medium suitable for the amination of β-alkoxyvinyl halomethyl ketones. The advantages of this method are the absence of solvents, short reaction times, and good yields.
一系列二十个卤代甲基化的β-烯酮[ R C(O)CH = C( R 1)N R 3 R 4,其中 R = CF 3,CCl 3,CHCl 2; R 1= H, Me , Ph ; R 3 = H, Me , Bu , Et ; R 4 = Me , Et , Bu ,烯丙基, 叔 戊基,CH 2在室温下使用离子液体[bmim] BF 4合成CH 2 OH, Bn 和 Ph ] 。已经证明该离子液体是适合于β-烷氧基乙烯基卤代甲基酮的胺化的反应介质。该方法的优点是无溶剂,反应时间短,产率高。
Regioselective synthesis of trifluoromethyl substituted quinolines from trifluoroacetyl acetylenes
作者:Russell J. Linderman、Kirollos S. Kirollos
DOI:10.1016/s0040-4039(00)94673-2
日期:1990.1
Trifluoromethyl substituted quinolines have been prepared by 1, 2- or 1, 4- addition of anilines to trifluoroacetyl acetylenes followed by intramolecular acid catalyzed ring closure.
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.
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作者:A. L. Krasovsky、V. G. Nenajdenko、E. S. Balenkova
DOI:10.1023/a:1012728922156
日期:——
A new method for the synthesis of aminovinyl trifluoromethyl ketones was developed. The method is based on the reactions of 4-sulfonyl-1,1-trifluorobut-3-ene-2,2-diols with various alkyl-, aryl-, dialkyl-, and alkylarylamines. The stereochemistry of the compounds obtained was studied.
O-N, S-N and N-N exchange reactions at olefinic carbon atoms: Facile synthetic method for β-trifluoroacetylvinylamines