Abstract
Ring closure of the bis-Grignard derived from cis-1,3-bis(bromomethyl)cyclopentane (5) on R 2 GeCl 2 (R=Ph or Me) afforded a 3-germabicyclo[3.2.1]octane system. Bromine cleavage of a phenyl group in 3,3-diphenyl-3-germabicyclo[3.2.1]octane and subsequent nucleophilic displacement of the bromide allowed differing substitution on the germanium atom. The incorporation of germanium into the bicyclo[2.2.1]heptane system was achieved through a chloroplatinic acid catalyzed, intramolecular hydrogermylation reaction of di-n-butyl(3-cyclopentenylmethyl)germane. The physical and spectral properties of these new molecules are presented
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