Superacid-catalyzed tandem Meyer–Schuster rearrangement/intramolecular hydroamination of <i>o</i>-anilinopropargyl alcohols for the synthesis of 2,3-dihydro-4(1H)-quinolones
作者:Guofeng Sun、Fengkai Cheng、Ruiheng Tao、Yuxing Sun、Jinpeng Pan、Yaohua Zhu、Zhonghua Wang、Fanhong Wu、Yan Yin
DOI:10.1080/00397911.2016.1196293
日期:2016.8.2
A TfOH-catalyzed synthesis of 2,3-dihydro-4(1H)-quinolones from o-anilinopropargyl alcohols was developed. Studies of N-protecting groups and substituents in phenyl rings showed that diverse groups could be applied. By controlling the catalyst loading, o-anilinopropargyl alcohols underwent the expected transformation smoothly to produce N-protected or N-deprotected 2,3-dihydro-4 (1H)-quinolones in good
摘要开发了一种由邻苯胺基炔丙醇合成 2,3-二氢-4(1H)-喹诺酮类的 TfOH 催化合成方法。苯环中的 N-保护基团和取代基的研究表明,可以应用不同的基团。通过控制催化剂负载量,邻苯胺基炔丙醇顺利地进行了预期的转化,以良好的产率生产 N-保护或 N-脱保护的 2,3-二氢-4 (1H)-喹诺酮。这种转化可能涉及串联的 Meyer-Schuster 重排/分子内加氢胺化反应过程。图形概要