Silicagel-supported H<SUB>6</SUB>P<SUB>2</SUB>W<SUB>18</SUB>O<SUB>62.</SUB>24H<SUB>2</SUB>O: A reusable catalyst to prepare diphenylmethyl (DPM) ethers

In this work, we report an efficient and facile preparation of diphenylmethylethers (benzydryl ethers, DPM-ethers) from benzhydrol and alcohols or phenols. Wells-Dawson heteropolyacid (H6P2W 18O62.24H2O), bulk or supported on silica showed catalytic activity for DPM-ethers preparation in toluene, at...

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Detalles Bibliográficos
Autores principales: Romanelli, Gustavo Pablo, Ruiz, Diego Manuel, Bideberripe, Hernán Pablo, Autino, Juan Carlos, Baronetti, Graciela Teresita, Thomas, Horacio Jorge
Formato: Articulo
Lenguaje:Inglés
Publicado: 2007
Materias:
Química
Alcoholes
DPM-ethers
H6P2W18O62.24H2O
Phenols
Protecting groups
Silicagel-supported catalyst
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83345
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:In this work, we report an efficient and facile preparation of diphenylmethylethers (benzydryl ethers, DPM-ethers) from benzhydrol and alcohols or phenols. Wells-Dawson heteropolyacid (H6P2W 18O62.24H2O), bulk or supported on silica showed catalytic activity for DPM-ethers preparation in toluene, at 60-80°C, in 0.5-1.5h. In these conditions twelve diphenylmethylethers of alcohols and phenol were obtained which excellent yields (78-96%). The heterogeneous reaction conditions provided a very simple, environmentally friendly, clean, economical and selective protocol, for the preparation of unsymmetrical ethers. The catalyst is easily recycled and reused without loss of the catalytic activity.

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