Synthèses et caractérisation de germylènes difonctionnels

Synthèses et caractérisation de germylènes difonctionnels

Syntheses and caracterization of bifunctional germylenes Several synthetic methods of bifunctional germylenes GeY2 (Y = RO, PhO, RS, CH3COO, Acac; Y2 = OCH2CH2O, SCH2CH2S) or GeXY (Y = RO, X = Cl; Y = RS, X = Cl; Y = Acac, X = Cl) such as exchange reactions, dechlorhydratation reactions and nucleoph...

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Veröffentlicht in:Helvetica chimica acta 1977-06, Vol.60 (4), p.1381-1387
Hauptverfasser: Dousse, Gabriel, Satgé, Jacques
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Satgé, Jacques
description Syntheses and caracterization of bifunctional germylenes Several synthetic methods of bifunctional germylenes GeY2 (Y = RO, PhO, RS, CH3COO, Acac; Y2 = OCH2CH2O, SCH2CH2S) or GeXY (Y = RO, X = Cl; Y = RS, X = Cl; Y = Acac, X = Cl) such as exchange reactions, dechlorhydratation reactions and nucleophilic substitutions from GeCl2 · dioxane are described. Some more synthesis of divalent species GeY2 from Ge(OR)2 by transalcoxylation and from Ge(Cp)2 by cleavage using protic species will be presented. The stability and reactivity of these germylenes are discussed. Difunctionnal germylenes give generally a selfpolycondensation reactions. However, their reactivity in situ shows a effective participation of monomeric species GeY2.
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