Reaction of monocyclic ferrocenyl-4,5-dihydropyrazoles with β-dicarbonyl compounds |
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| Authors: | E. I. Klimova E. A. Vazquez Lopez T. Klimova M. Martinez Garcia N. N. Meleshonkova L. Ruiz Ramirez |
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| Affiliation: | (1) National Autonomous University of Mexico, Mexico;(2) Institute of Chemistry, National Autonomous University of Mexico, Mexico;(3) Lomonosov Moscow State University, Moscow, Russia |
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| Abstract: | Monocyclic 3- and 5-ferrocenyl-4,5-dihydropyrazoles with a free NH group in the molecule react with acetylacetone to form the corresponding enaminocarbonyl compounds. The latter were isolated as a single isomer, presumably E. 3-Ferrocenyldihydropyrazoles and 5-ferrocenyl-3-(p-methoxyphenyl)-4,5-dihydropyrazole analogously react with acetoacetic ester. 5-Ferrocenyl-3-phenyl-, 3-(p-bromophenyl)-5-ferrocenyl, and 3,5-diferrocenyl-4,5-dihydropyrazoles react with acetoacetic ester to form acetoacetylpyrazolides.Translated from Zhurnal Obshchei Khimii, Vol. 74, No. 12, 2004, pp. 1942–1947.Original Russian Text Copyright © 2004 by E. Klimova, Vazquez Lopez, T. Klimova, Martinez Garcia, Meleshonkova, Ruiz Ramirez.This revised version was published online in April 2005 with a corrected cover date. |
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