Convenient preparation of unsymmetrical 2,5-disubstituted 1,3,4-oxadiazoles promoted by Dess–Martin reagent
作者:Cristian Dobrotă、Codruţa C. Paraschivescu、Ioana Dumitru、Mihaela Matache、Ion Baciu、Lavinia L. Ruţă
DOI:10.1016/j.tetlet.2009.02.054
日期:2009.4
2,5-Disubstituted 1,3,4-oxadiazoles have been conveniently prepared by oxidative cyclization of N-acyl-N'-aryliden-hydrazines promoted by all excess or Dess-Martin periodinane under Mild conditions (23 examples, up to 92% isolated yields). (C) 2009 Elsevier Ltd. All rights reserved.