Synthese et Quelques Aspects de la Reactivite Des Germylphosphines et des Germa-2, Phospholannes

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Abstract
2-germaphospholanes are prepared in high yields by the reaction between RPLi2 and 1-diorganogermyl, 3-chloropropanes. Germylphosphines and germaphospholanes can be also prepared in good yields by cleavage of the germanium-oxygen bond of methoxygermanes by the P-H group of primary or secondary phosphines. The germanium-phosphorus bonds of ξ maphospholanes are very sensitive to protonic reagents which lead to ξ condary γ-germylated phosphines. The cleavage of germanium-phosphorus bonds is also observed with some electrophilic and nucleophilic reagents. Several functional γ-germylated phosphines have been isolated and characterized in this way.