Ferrocene Compounds. XXIV. Synthesis and Reactions of Some omega, omega"-(1, 1"-Ferrocenylene)bis(thiaaliphatic Acids) (CROSBI ID 78241)
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Lisac, Srđan ; Rapić, Vladimir ; Zorić, Zoran ; Filipović-Marinić, Nevenka
engleski
Ferrocene Compounds. XXIV. Synthesis and Reactions of Some omega, omega"-(1, 1"-Ferrocenylene)bis(thiaaliphatic Acids)
Condensations of several alpha, alpha"-disubstituted 1, 1"-ferrocenylenebiscarbinols (1) with mercaptoethanoic acid, 3-mercaptopropanoic acid or 3-acetylthio-2-methylpropanoic acid in the presence of trifluoroacetic acid have given the corresponding 1, 1"-ferrocenylenebisthiaaliphatic acids (2-4) in 49-90 % yields. Reactions of acids 2-4 with trifluoroacetic anhydride yielded 15-29 % of trans-2-oxa(3)ferrocenophanes (trans-8), 7-13 % of (2, 2)ferrocenophanes (9) and 8-15 % of the ethanoferrocenylene oligomers (10). The mechanism of the reactions is discussed.
alpha; alpha
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