Iron‐Based Deep Eutectic Solvents: Key Players for Amide and Sulfonamide Synthesis and Alcohol Oxidation
作者:Luciana Cicco、Sara Urselli、Claudia Favia、Filippo Maria Perna、Paola Vitale、Vito Capriati
DOI:10.1002/ejoc.202400300
日期:——
Selective and sustainable oxidation of secondaryalcohols to their corresponding carbonyl compounds, alongside their applications as selective mono-alkylating reagents for both amide and arylsulfonamide derivatives, is achieved under aerobic and mild (40 °C) conditions in reusable Fe-based Lewis acidic deep eutectic solvents.
A convenient and user-friendly method to yield benzamides from primary and secondary amines and various benzylic alcohols in the presence of a cheap iron salt (FeCl2 center dot 4H(2)O) and tert-butylhydroperoxide (70% in water) as a stoichiometric oxidant is described. Control experiments indicated that this reaction might involve radical species. This method proved to be general, generating a family of 30 benzamides and was applied to the preparative synthesis of anti-anxiety drug moclobemide. (C) 2014 Published by Elsevier Ltd.
Simple Synthesis of Amides and Weinreb Amides Using PPh3 or Polymer-Supported PPh3 and Iodine
作者:Amit Kumar、Hari Kiran Akula、Mahesh K. Lakshman
DOI:10.1002/ejoc.200901420
日期:2010.5
range of carboxylic acids to 2 degrees , 3 degrees , and Weinrebamides. Simplification of the procedure was possible with the use of polymer-supported PPh3/I2. Weinrebamides produced via the use of polymer-supportedPPh3 could be filtered through a short silica gel plug and used in further transformations. Thus, use of polymer-supportedPPh3 offers potential applicability to diversity-oriented reactions
已经证明,PPh 3 / I 2的组合对于将一系列羧酸转化为2度,3度和Weinreb酰胺是有效的。使用聚合物负载的PPh3 / I2可以简化程序。通过使用聚合物负载的PPh3制备的Weinreb酰胺可以通过短硅胶塞过滤,并用于进一步的转化。因此,使用聚合物负载的PPh3可为面向多样性的反应提供潜在的适用性。通过使用这种酰胺形成方法,已经完成了载脂蛋白和普拉托恩的正式全部合成,以及脱水胆碱酮和马来帕定的合成。已尝试获得对该反应的了解。