An Alternative to the Classical α-Arylation: The Transfer of an Intact 2-Iodoaryl from ArI(O<sub>2</sub>CCF<sub>3</sub>)<sub>2</sub>
作者:Zhiyu Jia、Erik Gálvez、Rosa María Sebastián、Roser Pleixats、Ángel Álvarez-Larena、Eddy Martin、Adelina Vallribera、Alexandr Shafir
DOI:10.1002/anie.201405982
日期:2014.10.13
The α‐arylation of carbonyl compounds is generally accomplished under basic conditions, both under metal catalysis and via aryl transferfrom the diaryl λ3‐iodanes. Here, we describe an alternative metal‐free α‐arylation using ArI(O2CCF3)2 as the source of a 2‐iodoaryl group. The reaction is applicable to activated ketones, such as α‐cyanoketones, and works with substituted aryliodanes. This formal
A General and Convenient Preparation of [Bis(trifluoroacetoxy)iodo]perfluoroalkanes and [Bis(trifluoroacetoxy)iodo]arenes by Oxidation of Organic Iodides Using Oxone and Trifluoroacetic Acid
作者:Aleksandra A. Zagulyaeva、Mekhman S. Yusubov、Viktor V. Zhdankin
DOI:10.1021/jo902733f
日期:2010.3.19
[Bis(trifluoroacetoxy)iodo]perfluoroalkanes CnF2n+1I(OCOCF3)2 (n = 4, 6, 8, 10, 12) can be conveniently prepared by the oxidation of the corresponding perfluoroalkyl iodides with Oxone in trifluoroacetic acid at room temperature and subsequently converted to the stable [hydroxy(tosyloxy)iodo]perfluoroalkanes, CnF2n+1I(OH)OTs, by treatment with p-toluenesulfonic acid. This general and convenient procedure
[双(三氟乙酰氧基)碘]全氟烷烃C n F 2 n +1 I(OCOCF 3)2(n = 4、6、8、10、12 )可以方便地通过在三氟乙酸中用过氧化物氧化相应的全氟烷基碘化物来制备。然后在室温下用对甲苯磺酸处理,将其转化为稳定的[羟基(甲苯磺酰氧基)碘]全氟烷烃C n F 2 n +1 I(OH)OTs 。该通用且方便的方法已进一步扩展到各种[双(三氟乙酰氧基)碘]芳烃ArI(OCOCF 3)2的合成。
Direct and Convenient Synthesis of [Bis(trifluoroacetoxy)iodo]arenes from Iodoarenes
作者:Md. Delwar Hossain、Tsugio Kitamura
DOI:10.1246/bcsj.79.142
日期:2006.1
An easy, safe, and effective method for preparing [bis(trifluoroacetoxy)iodo]arenes, ArI(OCOCF3)2, in high yields from some iodoarenes are reported, using a K2S2O8/CF3COOH/CH2Cl2 system. This procedure avoids the use of high temperature and severe reaction conditions.
Development of Imino‐λ
<sup>3</sup>
‐iodanes with Improved Reactivity for Metal‐Free [2+2+1] Cycloaddition‐Type Reactions
作者:Takafumi Baba、Shunsuke Takahashi、Yui Kambara、Akira Yoshimura、Victor N. Nemykin、Viktor V. Zhdankin、Akio Saito
DOI:10.1002/adsc.201700934
日期:2017.11.10
Aiming at the enhancement of electrophilicity of imino‐λ3‐iodanes, we have developed (tosylimino)pentafluorophenyl‐λ3‐iodane, which shows superior reactivity compared to the commonly used (tosylimino)phenyl‐λ3‐iodane in the [2+2+1]‐type synthesis of imidazoles.
An Investigation of (Diacetoxyiodo)arenes as Precursors for Preparing No-Carrier-Added [<sup>18</sup>F]Fluoroarenes from Cyclotron-Produced [<sup>18</sup>F]Fluoride Ion
作者:Mohammad B. Haskali、Sanjay Telu、Yong-Sok Lee、Cheryl L. Morse、Shuiyu Lu、Victor W. Pike
DOI:10.1021/acs.joc.5b02332
日期:2016.1.4
Treatment of (diacetoxyiodo)arenes (1a-1u) with cyclotron-produced [(18)F]fluorideion rapidly affords no-carrier-added [(18)F]fluoroarenes (2a-2u) in useful yields and constitutes a new method for converting substituted iodoarenes into substituted [(18)F]fluoroarenes in just two steps.