Bernard W. Rockett

Unsymmetrically disubstituted ferrocenes : XII. 2-substituted ferrocenyltin compounds, and ferrocenes related to poly(vinyl chloride) stabilizers

Abstract Some dialkyltin halides have been condensed with lithiated [(dimethylamino)methyll]ferrocene to give the corresponding 2-substituted ferrocenyltinalkyls. The 57Fe and 119Sn Mossbauer spectra of one derivative are reported. The dibutyltin derivatives of a ferrocenethiol and a ferrocenecarboxylic acid are reported, these compounds are analogous to organotin stabilizers for vinyl polymers. A related titanium carboxylate is also described. The Ir and PMR spectra of the compounds are discussed.

Unsymmetrically disubstituted ferrocenes VI. The synthesis and reactivity of some 2-substituted ferrocenemethanols and -carboxaldehydes

Abstract The reaction of lithiated [(dimethylamino)methyl]ferrocene with paraformaldehyde and dimethylformamide has given 2-[(dimethylamino)methyl]ferrocenemethanol and 2-[(dimethylamino)methyl]ferrocenecarboxaldehyde, respectively. These aminoferrocenes have been converted into a variety of 1,2-disubstituted ferrocenes. 2-[(Dimethylamino)methyl](methoxymethyl)ferrocene has been reacted with lithium to yield the corresponding (lithiomethyl)ferrocene which was condensed with benzophenone.

Unsymmetrically disubstituted ferrocenes X. Synthesis of 2,2″- and 2,5″-disubstituted biferrocenes by the direct coupling of 2-substituted lithioferrocenes

Abstract A convenient and specific syntheses of 2,2″- and 2,5″-disubstituted biferrocenes by the coupling of 2-substituted lithioferrocenes in the presence of cobalt chloride is reported. Biferrocenes with (dimethylamino)methyl, 2-pyridyl and 2-quinolyl groups have been prepared form the corresponding monosubtituted ferrocenes.

The 1,4-addition of n-butyllithium to 2-ferrocenylquinoline

Abstract Treatment of 2-ferrocenylquinoline with n-butyllithium gave 1,4- rather than the expected 1,2- addition across the quinoline.

Unsymmetrically disubstituted ferrocenes : XIV. Homoannular and biferrocene derivatives from [(dimethylamino)ethyl]ferrocene☆

Abstract 1-Lithio-2-[(dimethylamino)ethyl]ferrocene was treated with tri-n-butyl borate to give the boronic acid and this was converted to the corresponding chloro, bromo and iodo derivatives. A mixture of the meso and racemic binuclear diamines was obtained from the same lithioamine with anhydrous cobalt chloride, whilst with paraformalldehyde the hydroxyamine was formed. Oxidation of [(dimethylamino)ethyl]ferrocene gave only vinylferrocene and not the expected ferrocenecarbaldehyde.

Novel photoreaction products of N-substituted ferrocenylimines

Abstract Ferrocene-aldimines and -ketimines undergo benzophenone sensitized photochemical hydrolysis to give the corresponding ferrocene-carbaldehydes or -ketones.