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Rapid and efficient protection of alcohols and phenols, and deprotection of trimethylsilyl ethers catalyzed by a cerium-containing polyoxometalate

✍ Scribed by Bahram Yadollahi; Valiollah Mirkhani; Shahram Tangestaninejad; Davud Karimian

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
91 KB
Volume
25
Category
Article
ISSN
0268-2605

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✦ Synopsis

Abstract

Herein, we want to report a simple and convenient way for protection‐deprotection of alcohols in the presence of ammonium decatungstocerate(IV) {(NH~4~)~8~[CeW~10~O~36~]Β·20H~2~O} as catalyst under ambient temperature in CH~3~CN. Using 0.002 mmol of the catalyst, various alcohols and phenols were transformed easily to the corresponding TMS ethers in excellent yields. In the second part, various TMS ethers were successfully converted to the parent hydroxyl compounds in the presence of the ammonium decatungstocerate(IV) catalyst. Copyright Β© 2010 John Wiley & Sons, Ltd.

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## Abstract In this paper, rapid and highly efficient trimethylsilylation of alcohols and phenols with hexamethyldisilazane (HMDS) in the presence of catalytic amounts of high‐valent [Sn^IV^(TPP)(OTf)~2~] is reported. This catalytic system catalyzes trimethylsilylation of primary, secondary and ter