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Réactions d'addition-élimination à partir d'hétérocycles germaniés du type I. Cas des dioxolannes germaniés

✍ Scribed by Gabriel Dousse; Hélène Lavayssière; Jacques Satgé

Book ID
102856480
Publisher
John Wiley and Sons
Year
1975
Tongue
German
Weight
962 KB
Volume
58
Category
Article
ISSN
0018-019X

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✦ Synopsis

Addition‐elimination reactions from germanium heterocycles I. Germadioxolanes (XYO)

The reactivity of 2‐germa‐1,3‐dioxolanes is studied with unsaturated compounds such as carbonyl compounds (aldehydes and ketones) or heterocumulenes (PhNCO, PhNCS). The formation of mono‐ and di‐insertion derivatives is observed. The structure of these adducts is established and their decomposition process, at atmospheric pressure or at high pressure, is precised.

The mechanism of these addition‐elimination reactions is established from 4,5‐disubstitued germadioxolanes. The reaction takes place under steric control. The consecutive elimination reaction proceeds by a mechanism of intramolecular nucleophilic substitution.

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