Cerium-Catalyzed Reaction ofβ-Dicarbonyl Compounds with Styrene and Atmospheric Oxygen
作者:Jens Christoffers、Thomas Werner、Wolfgang Frey、Angelika Baro
DOI:10.1002/ejoc.200300439
日期:2003.12
The cerium-catalyzed C−C coupling reaction of carbo- and heterocyclic β-dicarbonyl compounds 1 with styrenes 4, using oxygen (air) as the oxidant, at ambient temperature, is reported. The reaction afforded a mixture of diastereoisomeric hydroperoxides 5 which could be transformed into the unique dioxo compounds 6 by disproportionation of the peroxo function under treatment with acetyl chloride/pyridine
据报道,使用氧气(空气)作为氧化剂,在环境温度下,铈催化的碳和杂环 β-二羰基化合物 1 与苯乙烯 4 的 C-C 偶联反应。该反应提供了非对映异构氢过氧化物 5 的混合物,其可以通过在乙酰氯/吡啶处理下使过氧官能团歧化而转化为独特的二氧代化合物 6。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)