A New Catalytic Route for the Oxidative Halogenation of Cyclic Enol Ethers using Tungstate Exchanged on Takovite
作者:B. Sels、P. Levecque、R. Brosius、D. De?Vos、P. Jacobs、D.?W. Gammon、H.?H. Kinfe
DOI:10.1002/adsc.200404138
日期:2005.1
An efficient and benign method for the regio- and stereoselective synthesis of halohydrins and β-halo ethers from dihydropyrans, dihydrofurans and anhydro sugars in the presence of a halide salt and hydrogen peroxide is presented with tungstate-exchanged takovite as oxidation catalyst.
提出了一种高效,良性的方法,该方法用于在卤化物盐和过氧化氢的存在下,由钨酸盐交换的塔科维特作为氧化催化剂,从二氢吡喃,二氢呋喃和无水糖区域和立体选择性地合成卤代醇和β-卤代醚。