BmimOAc ionic liquid: A highly efficient catalyst for synthesis of 3-aryl-2-oxazolidinones by direct condensation of 2-(arylamino) alcohols with diethyl carbonate

Elnazeer H.M. Elageed, Binshen Wang, Yongya Zhang, Shi Wu, Guohua Gao

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

An efficient convenient procedure for the synthesis of 3-aryl-2-oxazolidinones from 2-(arylamino) alcohols and diethyl carbonate (DEC) catalyzed by ionic liquids is described. The effects of reaction time, amount of catalyst and temperature were investigated. Excellent yields of products were obtained under the optimized reaction conditions, when using BmimOAc as a catalyst. An intermediate ethyl 2-(phenyl amino) ethyl carbonate was isolated and characterized. 1H NMR spectroscopy and DFT calculations indicated that BmimOAc cooperatively activate the substrates through hydrogen bonding with its anion and cation sites. According to these results, a possible reaction mechanism was discussed.

Original languageEnglish
Article number9585
Pages (from-to)271-277
Number of pages7
JournalJournal of Molecular Catalysis A: Chemical
Volume408
DOIs
StatePublished - 1 Nov 2015

Keywords

  • Catalysis
  • Cooperative
  • Ionic liquids
  • Mechanism
  • Oxazolidinones

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