Alkoxide
- Alkoxide
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Alcoolate
Un alcoolate (ou alkoxyde) est la base conjuguée d'un alcool. La formule générale est donc R-O−. Le contre-ion est un atome métallique.
Synthèse
Les alcoolates peuvent être synthétisés par réduction de métaux alcalins, tel le sodium (Na).
Réactions
Les alcoolates peuvent réagir avec des composés halogénés pour former des éthers, par la synthèse de Williamson :
Voir aussi
Portail de la chimie
Catégories : Groupe fonctionnel | Base
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Alkoxide — The structure of a typical alkoxide group. An alkoxide is the conjugate base of an alcohol and therefore consists of an organic group bonded to a negatively charged oxygen atom. They can be written as RO−, where R is the organic substituent.… … Wikipedia
alkoxide — alkoholiatas statusas T sritis chemija formulė ROM atitikmenys: angl. alcoholate; alkoxide rus. алкоголят; алкоксид ryšiai: sinonimas – alkoksidas … Chemijos terminų aiškinamasis žodynas
alkoxide — noun Etymology: alkyl + oxide Date: circa 1889 a basic salt derived from an alcohol by the replacement of the hydroxyl hydrogen with a metal … New Collegiate Dictionary
alkoxide — /al kok suyd, sid/, n. Chem. a compound formed from an alcohol by the replacement of the hydrogen of the hydroxyl group with a metal, as sodium methoxide, CH3ONa, from methyl alcohol, CH3OH. Also called alcoholate. [ALK(YL) + OX(Y) 2 + IDE] * * * … Universalium
alkoxide — noun Any organic compound derived from an alcohol by replacement of a hydrogen atom with a metal or other cationic species … Wiktionary
alkoxide — n. basic salt formed from an alcohol … English contemporary dictionary
alkoxide — alk·ox·ide … English syllables
alkoxide — alˈkäkˌsīd, sə̇d noun ( s) Etymology: alkoxy + ide : a binary compound (as a methoxide) of an alkoxyl; especially : a base formed from an alcohol by replacement of the hydroxyl hydrogen with a metal * * * /al kok suyd, sid/, n. Chem. a compound… … Useful english dictionary
Silicon alkoxide — Silicon alkoxides are a group of alkoxides, chemical compounds of silicon and an alcohol, with the formula Silicon(OxygenR)4.Silicon alkoxides are an important precursor for manufacture of silica based aerogels … Wikipedia
silicon alkoxide — noun any compound of general formula Si(OR), the tetraalkyl orthosilicates; they react with water to for aerogels of silica … Wiktionary
Structure d'un alkoxyde.
