Author:
Bruce MI,Swincer AG,Thompson BJ,Wallis RC
Abstract
Reactions between ω-hydroxyalk-1-ynes,
HC2(CH2)nOH (n = 2 or 3) or HC2CH2CHMeOH,
and MX(PR3)2(η-C5H5) (M = Ru, X = Cl, R = Me or Ph; M = Os,
X = Br, R = Ph) in the presence of NH4PF6 give cationic
cyclic carbene complexes, presumably by rapid
intramolecular cyclization of (undetected) intermediate ω-hydroxyvinylidene
complexes. Further reactions of {Ru[C(CH2)3O]-(PPh3)2(η-C5H5)}+
include (a) base-catalysed H- D exchange of both H atoms of the β-CH2
group; (b) metallation and subsequent dimethylation of the β-CH2
group; (c) reduction by NaAlH2- (OCH2CH2OMe)2
to Ru[CH(CH2)3O](PPh3)2(η-C5H5).
Cited by
66 articles.
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