作者:Medy C. Nongbe、Nicolas Oger、Tchirioua Ekou、Lynda Ekou、Benjamin K. Yao、Erwan Le Grognec、François-Xavier Felpin
DOI:10.1016/j.tetlet.2016.09.022
日期:2016.10
1,2- and 1,3-Diols are readily protected as cyclic acetals and ketals through a graphene-catalyzed transacetalization process. The methodology features an atom economic procedure since quasi-stoichiometric conditions have been developed. Unlike prior systems, the graphene-catalyzed transacetalization is performed under Brønsted and Lewis acid-free conditions and without solvent. Our method has been
1,2-和1,3-二元醇通过石墨烯催化的反缩醛化过程很容易被保护为环状缩醛和缩酮。由于已经开发了准化学计量条件,因此该方法具有原子经济程序的特点。与现有系统不同,石墨烯催化的缩醛化反应是在无布朗斯台德和路易斯酸的条件下且没有溶剂的情况下进行的。我们的方法已应用于不适合复杂后处理和大量纯化步骤的几种挥发性化合物。石墨烯对缩醛化反应的非常不同寻常的催化性能归因于石墨烯与底物之间的分子电荷转移。