Simple and efficient palladium-catalyzed carbonylation of iodoxyarenes in water under mild conditions
摘要:
Iodoxyarenes (ArIO2) readily react with CO (1 atm) in water, in the presence of Na2[PdCl4] (0.1%) and Na2CO3 at 40-50-degrees-C, to give the corresponding carboxylic acids, ArCOOH, in 55-89% isolated yield. Particularly attractive features of the reaction are that, unlike most iodoarenes, ArIO2 can be carbonylated in aqueous media without any organic solvents, due to their solubility in water and high reactivity.
Transition metal-mediated oxidations utilizing monomeric iodosyl- and iodylarene species
作者:Mekhman S. Yusubov、Victor N. Nemykin、Viktor V. Zhdankin
DOI:10.1016/j.tet.2010.04.046
日期:2010.7
are reported. A convenient procedure for preparation of iodylarenes via RuCl3-catalyzed oxidation of iodoarenes has been developed. This procedure allows the generation of highly reactive monomeric iodine(V) species, which are excellent oxidants toward alcohols and hydrocarbons in situ. A broad range of substrates can be oxidized to carbonyl compounds by a tandem catalytic system based on the Ru(III)-catalyzed
报道了使用高价碘物质进行的几种过渡金属介导的氧化反应。已经开发了通过RuCl 3催化的碘代芳烃的氧化制备芳烃的简便方法。该程序允许产生高反应性的单体碘(V)物种,它们是原位对醇和碳氢化合物的极佳氧化剂。的宽范围的底物可以通过基于ARIO的钌(III)催化的再氧化到ARIO串联催化体系被氧化为羰基化合物2使用过硫酸氢钾®作为氧化剂。结果表明,亲电子碘(III)物种源自低聚的碘烷基苯硫酸盐(PhIO)3 SO 3是在金属卟啉配合物存在下催化氧化芳香烃的有效氧化剂。
Mild and efficient synthesis of iodylarenes using Oxone as oxidant
作者:Natalia Soldatova、Pavel Postnikov、Anna A. Troyan、Akira Yoshimura、Mekhman S. Yusubov、Viktor V. Zhdankin
DOI:10.1016/j.tetlet.2016.08.038
日期:2016.9
Mild and efficientmethod for the preparation of iodylarenes by oxidation of iodoarenes with Oxone in aqueous acetonitrile at room temperature is described. This new procedure allows the preparation of various iodylarenes with electron-donating or electron-withdrawing substituents in the aromatic ring including the previously unknown 1,2-diiodylbenzene.
(diacetoxyiodo)-arenes, ArI(OAc)2, or iodylarenes, ArIO2, from the corresponding iodoarenes, ArI, using sodium periodate as the oxidant are presented in this paper. In order to obtain 2- and 4-iodylbenzoic acids, the respective sodium salts of 2- and 4-iodobenzoic acids should be used as the starting substrates, because mixtures containing the corresponding iodosyl derivatives as the main products