Transformations of spirocyclodimers of 1,3-bis(ferrocenylmethylidene)-2-methylidenecycloalkanes in acid medium
Transformations of spirocyclodimers of 1,3-bis(ferrocenylmethylidene)-2-methylidenecycloalkanes...
Klimova, E.; Klimova, T.; Martinez Garcia, M.; Alvarez Toledano, C.; Toscano, A.; Ruiz Ramirez, L.
2004-10-13 00:00:00
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-tetracyclo[8.8.0.05,10.013,18]octadeca-2,13(18)-diene was established by X-ray diffraction analysis.
http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.pngRussian Chemical BulletinSpringer Journalshttp://www.deepdyve.com/lp/springer-journals/transformations-of-spirocyclodimers-of-1-3-bis-ferrocenylmethylidene-2-yPX20noibY
Transformations of spirocyclodimers of 1,3-bis(ferrocenylmethylidene)-2-methylidenecycloalkanes in acid medium
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-tetracyclo[8.8.0.05,10.013,18]octadeca-2,13(18)-diene was established by X-ray diffraction analysis.
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