Hypervalent Iodine(III)-Catalyzed Balz-Schiemann Fluorination under Mild Conditions
作者:Bo Xing、Chuanfa Ni、Jinbo Hu
DOI:10.1002/anie.201802466
日期:2018.7.26
An unprecedented hypervalentiodine(III) catalyzed Balz–Schiemann reaction is described. In the presence of a hypervalentiodine compound, the fluorination reaction proceeds under mild conditions (25–60 °C), and features a wide substrate scope and good functional‐group compatibility.
Catalyst-Free Aromatic Radiofluorination via Oxidized Iodoarene Precursors
作者:Young-Do Kwon、Jeongmin Son、Joong-Hyun Chun
DOI:10.1021/acs.orglett.8b03450
日期:2018.12.21
Oxidizediodoarenes (OIAs), prepared via mCPBA-mediated oxidation, have been demonstrated as versatile precursors for the synthesis of [18F]fluoroarenes in the absence of catalysts. OIAs have been identified as intermediates in single-pot syntheses of iodonium salts and ylides but have never been recognized as radiofluorinationprecursors. Here, the isolated OIAs were used without any catalysts to
Borosilicate Activation of (Difluoroiodo)toluene in the<i>gem</i>-Difluorination of Phenyldiazoacetate Derivatives
作者:Geoffrey S. Sinclair、Richard Tran、Jason Tao、W. Scott Hopkins、Graham K. Murphy
DOI:10.1002/ejoc.201600773
日期:2016.9
A combinedexperimental and computationalinvestigation was conducted to identify a mild and effective Lewis-acidic activator for TolIF2 in the gem-difluorination of diazo compounds. Computationally, borosilicate, a common constituent of laboratory glassware, was found to spontaneously activate TolIF2, and an extensive experimental survey confirmed borosilicate as the most effective activator to date
Synthesis of Diverse Aryliodine(
<scp>III</scp>
) Reagents by Anodic Oxidation
<sup>†</sup>
作者:Bing Zu、Jie Ke、Yonghong Guo、Chuan He
DOI:10.1002/cjoc.202000501
日期:2021.3
An anodic oxidation enabled synthesis of hypervalent iodine(III) reagents from aryl iodides is demonstrated. Under mild electrochemical conditions, a range of aryliodine(III) reagents including iodosylarenes, (difunctionaliodo)arenes, benziodoxoles and diaryliodonium salts can be efficiently synthesized and derivatized in good to excellent yields with high selectivity. As only electrons serve as the
Fluorinations of ?-Seleno Carboxylic Acid Derivatives with Hypervalent (Difluoroiodo)toluene
作者:Maria A. Arrica、Thomas Wirth
DOI:10.1002/ejoc.200400659
日期:2005.1
A very efficient synthesis of (difluoroiodo)toluene avoiding the use of elemental chlorine and elemental fluorine is described. We have fluorinated a series of α-acceptor substituted selenides using (difluoroiodo)toluene.The reactions are usually very clean and under the reaction conditions no further oxidized products are observed.