A new simple and effective method for the formation/cleavage of O-tert-butoxy carbonates of alcohols and phenols is proposed. Mesoporous silica-supported Er(III) (ErIII-MCM-41) was used as an efficient and reusable solid catalyst in the solvent-free ultrasound-assisted synthesis of Boc-carbonate derivatives of a wide range of alcohols and phenols. The fast, selective deprotection of Boc-derivatives is achieved with a very low amount of Er(OTf)3 in ethanol under microwave irradiation. Therefore, the entire protection/de-protection process is very attractive, from the point of view of sustainability. © 2011 The Royal Society of Chemistry.
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|Titolo:||An eco-sustainable erbium(III)-catalyzed method for formation/cleavage of O-tert-butoxy carbonates|
|Data di pubblicazione:||2011|
|Appare nelle tipologie:||1.1 Articolo in rivista|