ISSN:
1434-4475
Keywords:
Chromatographic Resolution on Acetylcellulose
;
Circular Dichroism
;
1,3-Diferrocenylbutadienes
;
1,3-Diferrocenylpropanes
;
1,3-Diferrocenylpropenes
;
1,3-Diferrocenylpropenols
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The title compound 2 was prepared by thermal dehydration of 1,3-diferrocenyl-1,3-diphenyl-propenol (24) with 70% yield.24 was accessible from 1,3-diferrocenyl-propanedione-1,3 (25) in two steps with 10% overall yield: Treatment of25 with phenyllithium gave 1,3-diferrocenyl-3-phenyl-propenone (8) which after repeated reaction with phenyllithium afforded24. Partial optical resolution of2 was achieved by chromatography on triacetyl cellulose in ethanol, whereby both (+)- and (−)-2 were obtained with different enantiomeric purities as could be deduced from the CD-spectra with Δε-values of +0.18 and −1.64, resp., at 480 nm. Attempts to prepare 1,3-diferrocenyl-allene and 1,3-diferrocenyl-1-phenyl-allene failed. In this context several 1,3-diferrocenyl-propenols,-propenones,-propenes,-propanones,-propanes and-butadienes were obtained.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00906246
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