Intermédiaires organiques du germanium divalent I. Synthèse de germanes α ou β fonctionnels par insertion de germylenes sur les liaisons C-X de dérivés organiques halogénés

Abstract

Abstract The organic derivatives of divalent germanium (germylenes) of the type: R(Cl)Ge:(R=alkyl, phenyl, chlorine) obtained by decomposition at room temperature of the methoxychlorohydrogermane R(Cl)(MeO)GeH, were condensed on various organic halo derivatives. The insertion of the germylenes on the halogen-carbon bond of β-ethylenic halo-compounds, α-haloketo derivatives, acid chloride or α-haloethers, leads to the formation of functionally substituted α or β organopolyhalogermanes some of which can not be prepared by other ways. These insertion derivatives can be characterized by NMR and IR spectroscopy, as well as by chemical route. In some cases, the functional germanes isolated by reduction or alkylation of the insertion products have been synthesized independently by new chemicals ways.