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Tetrahydropyranyl Protection and Deprotection of Alcohols using Niobium Phosphate as a Brønsted Acid Catalyst

Crites, Charles-Oneil L.; Lima, Filipe Matos; Marín García, Mª Luisa; Netto Ferreira, Jose Carlos; Impellizzeri, Stefania; Hallett-Tapley, Geniece L.; Scaiano, Juan César (NRC Research Press (Canadian Science Publishing), 2016-08)

Solid niobium oxide treated with phosphoric acid (NbP) was used as a heterogeneous catalyst in the protection of a series of aliphatic alcohols as tetrahydropyranyl (THP) derivatives. Protection of primary alcohols using ...
Use of different microporous and mesoporous materials as catalyst in the Diels-Alder and retro-Diels-Alder reaction between cyclopentadiene and p-benzoquinone

Gomez, M. Victoria; Cantin Sanz, Angel; Corma Canós, Avelino; Hoz, Antonio De la (Elsevier, 2005)

[EN] Diels-Alder cycloaddition between cyclopentadiene and p-benzoquinone has been studied using amorphous silica and different ITQ-2 and MCM-41 pure silica and metal containing materials as catalysts. The reaction can ...
What Is Measured When Measuring Acidity in Zeolites with Probe Molecules?

Boronat Zaragoza, Mercedes; Corma Canós, Avelino (American Chemical Society, 2019-02)

[EN] Based on theoretical calculations of CO, NH3, and pyridine adsorption at different sites in MOR and MFI zeolites, we analyze how confinement effects influence the measurement of acidity based on the interaction of ...

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