Highly efficient protection of alcohols as trityl ethers under solvent-free conditions, and recovery catalyzed by reusable nanoporous MCM-41-SO3H
作者:Zeynab Gholamzadeh、Mohammad Reza Naimi-Jamal、Ali Maleki
DOI:10.1016/j.crci.2014.01.003
日期:2014.10
Résumé An efficient method was developed for the protection of alcohols as trityl ethers using triphenylmethanol in the presence of nanoporous MCM-41-SO3H as a heterogeneous catalyst under solvent-free ball-milling at room temperature. Low catalyst loading, high efficiency, reusability are among the advantages of this new solvent-free and environmentally friendly method. The deprotection of the produced trityl ethers was also efficiently achieved using the same catalyst in wet acetonitrile.
简历摘要
一种高效的方法被开发出来,用于在室温下使用无溶剂球磨法,通过纳米孔道MCM-41-SO3H作为非均相催化剂,在三苯甲醇存在下保护醇为三苯甲醚。这种新的无溶剂和环保方法的优点包括低催化剂负载量、高效率和可重复使用性。所生成的三苯甲醚的去保护过程同样在该催化剂作用下于湿乙腈中高效完成。