Zirconia-Modified Superacid UDCaT-5: An Efficient and Versatile Catalyst for Alkylation Reactions under Solvent-Free Conditions
作者:Ganapati D. Yadav、Ganesh S. Pathre
DOI:10.1080/00397910802139387
日期:2008.7.24
Abstract UDCaT-5, a modified version of zirconia, efficiently catalyzes alkylation of phenols with alcohols under environmentally safe, heterogeneous reaction conditions with high selectivity and in excellent yields. The high content present in UDCaT-5 with preservation of tetragonal phase of zirconia was responsible for the superactivity. Several phenolic compounds carrying either electron-sulfer
摘要 UDCaT-5 是氧化锆的改性形式,可在环境安全的非均相反应条件下以高选择性和优异的产率高效催化酚与醇的烷基化反应。UDCaT-5 中存在的高含量同时保留了氧化锆的四方相是超活性的原因。几种酚类化合物在邻位、间位和对位上带有电子-硫释放或吸电子取代基,可提供高产率的产物。