Journal
ARKIVOC
Volume -, Issue -, Pages 1-8Publisher
ARKAT USA INC
DOI: 10.3998/ark.5550190.0008.101
Keywords
h(6)P(2)W(18)O(62).24H(2)O; silicagel-supported catalyst; DPM-ethers; protecting groups; alcohols; phenols
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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 ( H6P2W18O62.24H(2)O), bulk or supported on silica showed catalytic activity for DPM- ethers preparation in toluene, at 60-80 degrees 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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