作者:Faye Buckingham、Samuel Calderwood、Begoña Checa、Thomas Keller、Matthew Tredwell、Thomas Lee Collier、Ian M. Newington、Rajiv Bhalla、Matthias Glaser、Véronique Gouverneur
DOI:10.1016/j.jfluchem.2015.07.030
日期:2015.12
We report a late stage oxidative nucleophilicfluorination of N-arylsulfonamides, a class of compounds so far not considered as precursors to 4-fluorophenyl sulfonamides. By installing a para-positioned tert-butyl substituent on the aniline, oxidative fluorination takes place regioselectively in the presence of HF·pyridine and PIDA. This methodology has been shown to give good yields for a variety
Rearrangement Reaction Based on the Structure of <i>N</i>-Fluoro-<i>N</i>-alkyl Benzenesulfonamide
作者:Han-Ying Wang、Xiao-Qiu Pu、Xian-Jin Yang
DOI:10.1021/acs.joc.8b01841
日期:2018.11.2
A novel rearrangementreaction based on the structure of N-fluoro-N-alkyl benzenesulfonamide was developed. The reaction proceeded readily at 50 °C in formic acid and generated a variety of benzenesulfonamides and aldehydes or ketones simultaneously. The reaction mechanism is believed to be a concerted mechanism that consist of 1,2-aryl migration with the departure of fluorine anion via an SN2 mechanism
基于N-氟-N-烷基苯磺酰胺的结构,开发了一种新型的重排反应。该反应在50°C的甲酸中容易进行,并同时生成各种苯磺酰胺和醛或酮。该反应机理被认为是协同的机理,其由1,2-芳基迁移和氟阴离子经由S N 2机理的离开而组成。该重排反应具有令人感兴趣的反应机理,温和的反应条件,简单的操作和广泛的底物范围。