A Highly Efficient, Mild, and Selective Cleavage of β-Methoxyethoxymethyl (MEM) Ethers by Cerium(III) Chloride in Acetonitrile
作者:Gowravaram Sabitha、R. Satheesh Babu、M. Rajkumar、R. Srividya、J. S. Yadav
DOI:10.1021/ol015585w
日期:2001.4.1
[structure: see text]. A highly selective cleavage of MEM ethers has been achieved in high yields using CeCl3.7H2O in refluxing acetonitrile under mild and neutral reaction conditions. The method is very rapid and compatible with other hydroxyl protecting groups such as Bn, TBDPS, Ac, Me, Tr, PMB, benzylidene, THP, MOM, BOM, and NHAc present in the substrate.
[结构:见文字]。使用CeCl3.7H2O在温和中性反应条件下,在回流的乙腈中,可以高收率实现MEM醚的高选择性裂解。该方法非常快速,并且与存在于底物中的其他羟基保护基如Bn,TBDPS,Ac,Me,Tr,PMB,亚苄基,THP,MOM,BOM和NHAc兼容。