全部文献期刊会议图书|学者科研项目
中外文文献  中文文献  外文文献
作者:Koeun Kim , Yeonkyoung Kim , Sewon Park ...
来源:[J].Journal of Power Sources(IF 4.675), 2018, Vol.396, pp.276-287
摘要:Abstract(#br)An ethyl 4,4,4-trifluorobutyrate (ETFB) additive, with ester and partially fluorinated alkyl moieties, is employed to stabilize the interface structure of Ni-rich layered LiNi 0.7 Co 0.15 Mn 0.15 O 2 (NCM) cathodes and graphite anodes. The analysis of the surface ...
作者:Xianfu Li , Liping Song , Chunhui Xing ...
来源:[J].Tetrahedron(IF 2.803), 2005, Vol.62 (10), pp.2255-2263
摘要:Abstract(#br)In the presence of a catalytic amount of NEt 3 , ethyl 4,4,4-trifluoro-3-oxobutanoate 1 reacted readily with arylidenemalononitriles 2 in ethanol at room temperature. It gave two products 2-trifluoromethyl-3,4-dihydro-2 H -pyran derivatives 3 and 2-(trifluoromethyl)p...
作者:Martin Bertau , Dieter Scheller
来源:[J].Enzyme and Microbial Technology(IF 2.592), 2003, Vol.32 (3), pp.491-497
摘要:Abstract(#br)The presence of a trifluoromethyl group has implications on the enantioselective biotransformation of ethyl 4,4,4-trifluoro-acetoacetate with Saccharomyces cerevisiae (Baker’s yeast). Reaction of the trifluoro-keto ester with the aqueous solvent leads to hydratio...
作者:N. P. Grigoryan , A. I. Markosyan , R. G. Paronikyan ...
来源:[J].Pharmaceutical Chemistry Journal(IF 0.32), 2017, Vol.51 (8), pp.635-640
摘要:7,10-Dimethyl-2-thioxo-2,3-dihydro-1 H -spiro[benzo[ h ]quinazoline-5,1′-cyclohexane]-4(6 H )-one was synthesized from ethyl 4′-amino-5′,8′-dimethyl-1′ H -spiro[cyclohexane-1,2′-naphthalene]-3′-carboxylate and reacted with various alkyl(benzyl)halides to afford...
作者:Simone Santos de Sousa Oliveira , Luiza Rosária Sousa Dias , Natane Cezario Barbosa ...
来源:[J].Tetrahedron Letters(IF 2.397), 2013, Vol.54 (24), pp.3067-3070
摘要:Abstract(#br)Resting cells of Kluyveromyces marxianus were used in the bioreduction of ethyl 4,4,4-trifluoro-3-oxobutanoate and ethyl 4,4,4-trichloro-3-oxobutanoate with 81% and 4% yields and 29% and 73% enantiomeric excess, respectively. The differences observed were attributed ...
作者:Paolo Davoli , Arrigo Forni , Irene Moretti ...
来源:[J].Enzyme and Microbial Technology(IF 2.592), 1999, Vol.25 (1), pp.149-152
摘要:Abstract(#br)( R )-(+) and ( S )-(−) ethyl 4,4,4-trifluoro-3-hydroxybutanoate are obtained both by enantioselective Baker’s yeast reduction of ethyl 4,4,4-trifluoro-3-oxobutanoate in the presence of allyl bromide or allyl alcohol. The two additives act as inhibitors of Si o...
作者:Yulia S. Kudyakova , Denis N. Bazhin , Pavel A. Slepukhin ...
来源:[J].Tetrahedron Letters(IF 2.397), 2017, Vol.58 (8), pp.744-747
摘要:Abstract(#br)The one-step preparation of diethyl 2-ethoxy-6-CF 3 -2 H -pyran-3,5-dicarboxylate via the condensation of ethyl 4,4,4-trifluoroacetoacetate with CH(OEt) 3 has been reported and a plausible mechanism for this transformation is discussed. To demonstrate the synthetic p...
作者:Mudulkar Sairam , Gannerla Saidachary , Bhimapaka China Raju
来源:[J].Tetrahedron Letters(IF 2.397), 2015, Vol.56 (11), pp.1338-1343
摘要:Abstract(#br)A highly efficient and simple protocol has been developed for the preparation of ethyl 2-oxo-2 H -chromene-3-carboxylates 3a – v by the condensation of salicylaldehydes 1a – v with ethyl 4,4,4-trichloro-3-oxobutanoate 2 for the first time. The reaction is procee...
作者:Qiao-Sheng Hu , Chang-Ming Hu
来源:[J].Journal of Fluorine Chemistry(IF 1.939), 1997, Vol.83 (1), pp.87-88
摘要:Abstract(#br)Ethyl 4,4-difluoro-3-ethoxy-4-halocrotonates react with carbonyl compounds in the presence of zinc, giving 4,4-difluorocrotonate derivatives in good yields. A prolonged reaction time results in the formation of 4,4-difluoro-2-lactenones.
作者:Michael G. Barlow , Nadia N.E. Suliman , Anthony E. Tipping
来源:[J].Journal of Fluorine Chemistry(IF 1.939), 1995, Vol.73 (1), pp.61-67
摘要:Abstract(#br)Thermal reaction of ethyl 4,4,4-trifluorobut-2-ynoate ( 1 ) and hexafluorobut-2-yne ( 2 ) with quadricyclane ( 3 ) gave the exo -1:1 adducts ( 4a ) and ( 4b ), respectively, by a ( σ 2 s + σ 2 s + η 2 s ) cycloaddition pathway. Hydrogenation (1 mol equiv. of h...

我们正在为您处理中,这可能需要一些时间,请稍等。

资源合作:cnki.scholar@cnki.net, +86-10-82896619   意见反馈:scholar@cnki.net

×