Iron-Catalyzed Highly Efficient Aerobic Oxidative Synthesis of Benzimidazoles, Benzoxazoles, and Benzothiazoles Directly from Aromatic Primary Amines Under Solvent-Free Conditions in the Open Air
作者:Jiatao Yu、Yonggen Xia、Ming Lu
DOI:10.1080/00397911.2014.914221
日期:2014.10.18
Abstract Solvent-free oxidative synthesis of benzimidazoles, benzoxazoles, and benzothiazoles from aromatic primary amines and o-phenylenediamine, o-aminophenol, and o-aminothiophenol has been achieved by using Fe(NO3)3 and TEMPO (2,2,6,6-tetramethyl-1-piperidinyloxyl). This reaction can use air as an economical and green oxidant, and a wide variety of derivatives were obtained in good to excellent
摘要 利用 Fe(NO3)3 和 TEMPO (2,2,6,6) 实现了以芳香伯胺和邻苯二胺、邻氨基苯酚和邻氨基苯硫酚无溶剂氧化合成苯并咪唑、苯并恶唑和苯并噻唑。 -四甲基-1-哌啶基氧基)。该反应可以使用空气作为经济的绿色氧化剂,并且以良好到优异的收率获得了多种衍生物。提出了反应机理,该方法为制备取代的苯并咪唑、苯并恶唑和苯并噻唑提供了一种直接、实用、有效的方法。图形概要