A safe and selective method for reduction of 2-nitrophenylacetic acid systems to N-aryl hydroxamic acids using continuous flow hydrogenation
作者:Ogar Ichire、Petra Jans、Galina Parfenov、Amy B. Dounay
DOI:10.1016/j.tetlet.2017.01.008
日期:2017.2
The cyclic hydroxamic acid functional group is critical to the biological activity of numerous natural products and drug candidates. Efficient, reliable, and green synthetic methods to produce cyclic hydroxamic acids are needed. Herein, flow hydrogenation has been explored as a novel approach toward achieving the selective partial reduction of 2-nitrophenylacetic acid to 1-hydroxyindolin-2-one. The
环状异羟肟酸官能团对于众多天然产物和候选药物的生物活性至关重要。需要有效,可靠和绿色的合成方法来生产环状异羟肟酸。在本文中,已经探索了流动氢化作为实现2-硝基苯基乙酸选择性部分还原为1-羟基吲哚-2-酮的新方法。双齿配体1,10-菲咯啉已被确定为在Pt / C催化过程中调节产物选择性的独特抑制剂。根据新优化的反应条件下,有针对性的hydroxami Ç产生以高选择性(49:1)在酸的副产物的内酰胺。对于多种2-硝基苯基乙酸衍生物证明了反应范围。