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N. D. Obushak A. I. Lesyuk Yu. I. Gorak V. S. Matiichuk 《Russian Journal of Organic Chemistry》2009,45(9):1375-1381
Catalytic arylation of furan-2-carbaldehyde with arenediazonium salts was studied. The yields of 5-arylfuran-2-carbaldehydes were found to depend on the solvent, catalyst, and anion in the arenediazonium salt. Redox catalysis and generation of aryl radicals are not sufficient conditions for the reaction to occur. The reaction is successful only under conditions ensuring formation of complex intermediates. A mechanism involving two Cu2+ ? Cu+ catalytic series and generation of furan-2-carbaldehyde was proposed. 相似文献
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I. S. Fedorovich N. I. Ganushchak V. V. Karpyak N. D. Obushchak A. I. Lesyuk 《Russian Journal of Organic Chemistry》2007,43(8):1190-1195
Interaction of 5-arylfurfurals or arylaldehydes with secondary amines (monosubstituted piperazines, morpholine, piperidine) and sulfur under conditions of Wilgerodt-Kindler reaction provided N-substituted thioamides of 5-arylfuran-2-carboxylic and benzoic acids. 相似文献
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Ganushchak N. I. Lesyuk A. I. Fedorovich I. S. Obushak N. D. Andrushko V. N. 《Russian Journal of Organic Chemistry》2003,39(9):1295-1300
2-[2-(5-Aryl-2-furyl)ethenyl]-1,3-benzazoles were synthesized by reaction of 5-aryl-2-furaldehydes with 2-methylbenzoxazole, 2-methylbenzothiazole, 2-methylbenzimidazole, and 2-cyanomethylbenzimidazole. The corresponding benzazoles were also obtained by reaction of N-(5-arylfurfurylidene)anilines with 2-methylbenzoxazoles and of 3-(5-aryl-2-furyl)-2-cyanopropenoyl chlorides with o-phenylenediamine. The acylation of o-aminophenol with 3-(5-aryl-2-furyl)-2-cyanopropenoyl chlorides occurs at the amino group without subsequent oxazole ring closure. 相似文献
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