Alkoxide

Alcoolate

Structure d'un alkoxyde.

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).

\mathrm{ROH + Na \longrightarrow RO^- + Na^+ + \frac12 H_2}

Réactions

Les alcoolates peuvent réagir avec des composés halogénés pour former des éthers, par la synthèse de Williamson :

Synthèse de Williamson, où X est un halogène.

Voir aussi

  • Portail de la chimie Portail de la chimie
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