Journal of Organometallic Chemistry p. 115 - 125 (1992)
Update date:2022-08-05
Topics:
Mazerolles, Pierre
Laurent, Christian
In the reduction of a mixture of an organosilicon or organogermanium dihalide and 1,4-dibromo-2,3-bis(bromomethyl)-2-butene with an alkali metal forming hexahydrodimetallapentalenes, best yields were obtained by using lithium in ether/tetrahydrofuran.This reaction, when extended to 1,2-dichloro-disilanes and -digermanes gave the corresponding tetrametallaoctahydronaphthalenes.When activated zinc was used instead of alkali metal in these reactions, bis(methylene)metallacycloalkanes were formed; their reactions with germanium diiodide gave bicyclic compounds with two or three metal atoms per molecule.A stepwise reaction gave chains of organogermanium bicyclic compounds of controlled length.
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