ZSM-5-SO3H as a novel, efficient, and reusable catalyst for the chemoselective synthesis and deprotection of 1,1-diacetates under eco-friendly conditions |
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| Authors: | Ahmad Reza Massah Roozbeh Javad Kalbasi and Anahita Shafiei |
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| Institution: | (1) Department of Chemistry, Shahreza Branch, Islamic Azad University, 86145-311 Shahreza, Isfahan, Iran;(2) Razi Chemistry Research Center, Shahreza Branch, Islamic Azad University, 86145-311 Shahreza, Isfahan, Iran |
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| Abstract: | Abstract ZSM-5 has been modified as supported sulfuric acid (ZSM-5-SO3H) and introduced for the first time as a mild, convenient, reusable, and heterogeneous catalyst. Various types of aldehydes
were efficiently converted to their 1,1-diacetates using a catalytic amount of ZSM-5-SO3H in excellent yields under solvent-free and heterogeneous conditions at room temperature. The deprotection of 1,1-diacetates
has also been achieved using this novel catalyst in ethanol. The procedure is operationally simple, environmentally benign,
and only a stoichiometric amount of anhydride is used. |
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