Abstract
Ethyl 2-cyano-4,4,4-trifluoro-3-(phenylamino)but-2-enoates have been synthesized by reaction of ethyl 2-cyanoacetate with trifluoroacetimidoyl chloride derivatives using sodium hydride in acetonitrile by conventional and microwave irradiation methods. Then, intramolecular cyclization of these products in nitrobenzene under reflux conditions afforded a new series of substituted (trifluoromethyl)quinoline-3-carbonitrile derivatives in quantitative yields.
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We gratefully acknowledge the Vail-e-Asr University of Rafsanjan Faculty Research Grant for financial support.
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Darehkordi, A., Talebizadeh, M. & Anary-Abbasinejad, M. Expedient approach to synthesis of 4-hydroxy-2-(trifluoromethyl) quinolines through an intramolecular cyclization of ethyl 2-cyano-4,4,4-trifluoro-3 (arylamino)but-2-enoate derivatives. Mol Divers 23, 307–315 (2019). https://doi.org/10.1007/s11030-018-9872-x
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DOI: https://doi.org/10.1007/s11030-018-9872-x