To deprotect an alcoholic hydroxyl group protected by a t-butyldimethylsilyl group without influencing a functional group unstable to an acid. In the presence of a solvent, an alcohol having a hydroxyl group protected by a t-butyldimethylsilyl group is deprotected in the presence of an acid or an acid salt having a pKa of from 1.0 to 3.0 in water.
Aluminium Chloride Hexahydrate (AlCl<sub>3</sub> · 6H<sub>2</sub>O): An Efficient, Facile, Mild, And Highly Chemoselective Catalytic Deprotection of Tert-Butyldimethylsilyl (TBS) Ethers
作者:Davir González-Calderón、Luis J. Benitez-Puebla、Carlos A. Gonzalez-Gonzalez、Marco A. Garcia-Eleno、Aydeé Fuentes-Benitez、Erick Cuevas-Yañez、David Corona-Becerril、Carlos González-Romero
DOI:10.1080/00397911.2013.851243
日期:2014.5.3
Abstract tert-Butyldimethylsilyl (TBS) phenyl / alkyl ethers were cleaved to the corresponding efficiently parent hydroxyl compounds in good yields usingcatalyticamounts of AlCl3 · 6H2O by conventional or microwave-assisted heating in methanol or isopropanol solution. Intramolecular and competitive experiments demonstrated the chemoselective deprotection of TBS ethers in the presence of triisopropylsilyl