Highly Selective Reduction of α, β -Unsaturated Aldehydes and Ketones under Ambient Conditions using Tetraalkylphosphonium-based Ionic Liquids - Physico-chimie des Matériaux et des Electrolytes pour l'Energie Laboratoire - - EA 6299 Accéder directement au contenu
Article Dans Une Revue ChemistrySelect Année : 2018

Highly Selective Reduction of α, β -Unsaturated Aldehydes and Ketones under Ambient Conditions using Tetraalkylphosphonium-based Ionic Liquids

Résumé

An efficient and green protocol for highly selective reduction of α,β‐unsaturated aldehydes and ketones at room temperature is described in a range of ionic liquids, in the absence of noble metal catalysts, by using NaBH4 as reducing agent. Most notably, using [P6,6,6,14][N(CN)2] ionic liquid, in absence of organic solvent, within 10 min, 97% conversion of cinnamaldehyde was achieved with 100% selectivity towards cinnamyl alcohol. The ionic liquid was easily recycled without any noticeable decline in activity. The reduction protocol was further extended to a variety of α,β‐unsaturated aldehydes and ketones.

Dates et versions

hal-02057026 , version 1 (05-03-2019)

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Kathryn Ralphs, Éadaoin Mccourt, Christopher Ormandy, Thiago Carneiro de souza, Peter Nockemann, et al.. Highly Selective Reduction of α, β -Unsaturated Aldehydes and Ketones under Ambient Conditions using Tetraalkylphosphonium-based Ionic Liquids. ChemistrySelect, 2018, 3 (42), pp.11706-11711. ⟨10.1002/slct.201801092⟩. ⟨hal-02057026⟩

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