RuCl<sub>3</sub>-Catalyzed Oxidation of Iodoarenes with Peracetic Acid: New Facile Preparation of Iodylarenes
作者:Alexey Y. Koposov、Rashad R. Karimov、Andrey A. Pronin、Tatyana Skrupskaya、Mekhman S. Yusubov、Viktor V. Zhdankin
DOI:10.1021/jo062073s
日期:2006.12.1
New facile methodology for the preparation of pentavalent iodine compounds using peraceticacid as an oxidant in the presence of catalytic amounts of ruthenium trichloride is described. The new procedure allows the preparation of several previously unknown iodylarenes bearing strongly electron-withdrawing CF3 groups in the aromatic ring.
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。
Syntheses of (Diacetoxyiodo)arenes or Iodylarenes from Iodoarenes, with Sodium Periodate as the Oxidant
(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
Easy Preparation of (Diacetoxyiodo)arenes from Iodoarenes with Sodium Percarbonate as the Oxidant
作者:Agnieszka Zielinska、Lech Skulski
DOI:10.3390/71100806
日期:——
Easy and effective preparations of nearly pure (diacetoxyiodo)arenes, ArI(OAc)2, from iodoarenes, ArI, are reported. In most cases the crude colorless products thus obtained need not be further purified, i.e., by recrystallization. As an example, the PhI(OAc)2 thus prepared was 99% pure (by iodometry).
据报道,从碘烯烃 ArI 可以简单有效地制备近乎纯净的(二乙酰氧基碘)烯烃 ArI(OAc)2。在大多数情况下,这样得到的无色粗产品无需进一步提纯,即通过重结晶。例如,这样制备的 PhI(OAc)2 纯度为 99%(通过碘量计)。
NUCLEOPHILIC FLUORINATION OF AROMATIC COMPOUNDS
申请人:Satyamurthy Nagichettiar
公开号:US20110178302A1
公开(公告)日:2011-07-21
Iodylbenzene derivatives substituted with electron donating as well as electron withdrawing groups on the aromatic ring are used as precursors in aromatic nucleophilic substitution reactions. The iodyl group (IO
2
) is regiospecifically substituted by nucleophilic fluoride to provide the corresponding fluoroaryl derivatives. No-carrier-added [F-18]fluoride ion derived from anhydrous [F-18](F/Kryptofix, [F-18]CsF or a quaternary ammonium fluoride (e.g., Me
4
NF, Et
4
NF, n-Bu
4
NF, (PhCH
2
)
4
NF) exclusively substitutes the iodyl moiety in these derivatives and provides high specific activity F-18 labeled fluoroaryl analogs. Iodyl derivatives of a benzothiazole analog and 6-iodyl-L-dopa derivatives have been synthesized as precursors and have been used in the preparation of no-carrier-added [F-18]fluorobenzothiazole as well as 6-[F-18]fluoro-L-dopa.