- Synthesis of polymetallacycloalkanes
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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.
- Mazerolles, Pierre,Laurent, Christian
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p. 115 - 125
(2007/10/02)
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