Metal-Free [2 + 2 + 1] Annulation of Alkynes, Nitriles, and Oxygen Atoms: Iodine(III)-Mediated Synthesis of Highly Substituted Oxazoles
作者:Akio Saito、Akihiro Taniguchi、Yui Kambara、Yuji Hanzawa
DOI:10.1021/ol4009816
日期:2013.6.7
The metal-free [2 + 2 + 1] annulation of alkynes, nitriles, and O-atoms for the regioselective assembly of 2,4-disubstituted and 2,4,5-trisubstituted oxazole compounds has been achieved by the use of PhIO with TfOH or Tf2NH. The present reaction could be applied to a facile synthesis of an anti-inflammatory drug.
炔烃,腈和O原子用于2,4-二取代和2,4,5-三取代的恶唑化合物的区域选择性组装的无金属[2 + 2 +1]环已通过使用PhIO与TfOH或Tf 2 NH。本反应可用于抗炎药的简便合成。