Transformations of spirocyclodimers of 1,3-bis(ferrocenylmethylidene)-2-methylidenecycloalkanes in acid medium |
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| Authors: | Klimova E I Klimova T Martinez Garcia M Alvarez Toledano C Toscano A R Ruiz Ramirez L |
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| Institution: | (1) Department of Chemistry, National Autonomous University of Mexico, C. P. 04510 Mexico D.F., Mexico;(2) Institute of Chemistry, Autonomous University of Mexico, C. P. 04510 Mexico D.F., Mexico |
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| Abstract: | An intramolecular homoannular alkylation of one ferrocenyl substituent in spirocyclodimers of 1,3-bis(ferrocenylmethylidene)-2-methylidenecyclohexanes and -cycloheptanes on treatment with trifluoroacetic acid, leading to the formation of polyfused products containing a three-petal system of six-membered rings in the molecule center, was found. The structure of 11-ferrocenyl-6,14-bis(ferrocenylmethylidene)-2,3-ferroceno-1,2-tetracyclo8.8.0.05,10.013,18]octadeca-2,13(18)-diene was established by X-ray diffraction analysis. |
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| Keywords: | ferrocene s-cis-1 3-bis(ferrocenylmethylidene)-2-methylidenecycloalkanes ferrocenylpolycycloalkanes alkylation X-ray diffraction analysis |
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