Synthesis of Asymmetric Peroxides: Transition Metal (Cu, Fe, Mn, Co) Catalyzed Peroxidation of β-Dicarbonyl Compounds with <i>tert</i>-Butyl Hydroperoxide
作者:Alexander O. Terent’ev、Dmitry A. Borisov、Ivan A. Yaremenko、Vladimir V. Chernyshev、Gennady I. Nikishin
DOI:10.1021/jo100793j
日期:2010.8.6
(Cu, Fe, Mn, Co) catalyzed peroxidation of β-dicarbonyl compounds at the α position by tert-butyl hydroperoxide was discovered. A selective, experimentally convenient, and gram-scale method was developed for the synthesis of α-peroxidated derivatives of β-diketones, β-keto esters, and diethyl malonate. Virtually stoichiometric (2−3/1) molar ratios of tert-butyl hydroperoxide and a dicarbonyl compound
发现了过渡金属(Cu,Fe,Mn,Co)通过叔丁基氢过氧化物催化α位处的β-二羰基化合物的过氧化。开发了一种选择性,实验方便且克级的方法来合成β-二酮,β-酮酸酯和丙二酸二乙酯的α-过氧化衍生物。叔丁基氢过氧化物和二羰基化合物的化学计量摩尔比(2-3 / 1)用于与β-二酮和β-酮酸酯的反应中。以β-酮酸酯(45-90%)的最高产率合成目标化合物,而以β-二酮(46-75%)和丙二酸酯(37-67%)的产率更低。