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Synthesis, structures and reactions of some metallocene alcohols
Authors
C Arisandy
S Barlow
+4 more
TJ Brunker
AR Cowley
D O'Hare
LH Rees
Publication date
1 January 2004
Publisher
Abstract
E-1-Ferrocenyl-4,4-dimethylpent-2-ene-1-one has been synthesised from the Friedel-Crafts acylation of ferrocene with E-3- tert -butylacryloylchloride and converted to 1-ferrocenyl-3-chloro-4, 4-dimethylpentan-1-one using ethereal hydrogen chloride. This new chloro ketone has been converted into three new ferrocene alcohols: 1-ferrocenyl-3,4-dimethyl-4-hydroxypentan-1-one, 1-ferrocenyl-3- chloro-4,4-dimethylpentan-1-ol, and 2,2,6,6-tetramethyl-3-ferrocenyl- 5-chloroheptan-3-ol. A new dinuclear ferrocene derivative, E,E-2,2,9,9-tetramethyl-5,6-diferrocenyl-deca-3,7-diene, was isolated after treatment of 1-ferrocenyl-3-chloro-4,4-dimethylpentan-1-ol with acidic alumina; its structure was confirmed by X-ray crystallography, whilst electrochemistry revealed metal-metal interactions of similar magnitude to those seen for other 1,2-bis(ferrocenyl)ethane derivatives. Crystal structures have also been determined for 2,2,6,6-tetramethyl-3-ferrocenyl-5-chloroheptan-3-ol, rac-1-hydroxy[3]ferrocenophane, rac-1S,3S-1,3-diphenyl-1-hydroxy[3]ferrocenophane, and of rac-1,1′-diphenyl-1,1′- (1,1′- ruthenocenediyl)dimethanol and show an intramolecular Cl⋯H-O hydrogen bond, a tetramer based on O⋯H-O hydrogen bonds, no hydrogen bonding, and a dimer with inter- and intramolecular O⋯H-O hydrogen bonds, respectively. © 2003 Elsevier B.V. All rights reserved
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Last time updated on 30/09/2015