Practical Preparation of Diosphenols by Ring Opening of α,β-Epoxyketones Catalyzed by Silica Gel Supported Acids
作者:Yuefei Hu、Rui Zhu、Lixin Xing、Xinyan Wang、Chuanjie Cheng、Bo Liu
DOI:10.1055/s-2007-985584
日期:——
The mixed acid (H 2 SO 4 -HOAc) catalyzed ring opening of α,β-epoxyketone was the most used method for the preparation of diosphenols, but it seriously suffered from poor yields and -tedious workup operations. By using silica gel supported mixed acid (H 2 SO 4 -HOAc), a variety of α,β-epoxyketones were converted into the corresponding diosphenols in unprecedented high yields within a few minutes.
混酸(H 2 SO 4 -HOAc)催化α,β-环氧酮开环是制备二酚类化合物最常用的方法,但其收率低,后处理操作繁琐。通过使用硅胶负载的混合酸(H 2 SO 4 -HOAc),各种α,β-环氧酮在几分钟内以前所未有的高产率转化为相应的二酚。