The electrooxidation of germatranes with different R groups at Ge was studied in CH3CN and DMF solutions. The results of cyclic voltammetry supported by DFT B3LYP/6-311G calculations suggest that donor activity of the N atom is substantially reduced by the dative N-Ge coordination compared to parent trialkylamino derivatives, Et3N and (HOCH2CH2)3N. The electro chemical reactivity of these compounds is well described by the generalized additive inductive model including mesomeric interactions. The oxidation of germatranes follows classical scheme for tertiary amines - reversible electron transfer with the ensuing deprotonation of alpha-carbon atom; last reaction was used for anodic cyanation of m-bromobenzyl germatrane.

Durch Reduktion der in den Positionen 2, 3 und 4 unterschiedlich substituierten Cyclopentanone (I) mit NaBH4 werden in Abhängigkeit vom Substitutionsmuster in ihrer Zusammensetzung wechselnde Gemische aus den Cyclopentanolen (II) und den Lactonen (III) erhalten.

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