1. Department of Chemistry, Faculty of Sciences, The University of Shahrekord, P. O. Box 115, Shahrekord, Iran 2. Young Researchers and Elite Club, Islamic Azad University, Shahrekord Branch, Shahrekord, Iran
A new and one-pot synthesis of oxazolines has been accomplished by K5[PW11ZnO39].23H2O—catalyst acylation followed by C–N ring opening/C–O bond formation in NH ketoaziridines. This regio- and stereo-selective reaction presumably proceeds via a domino sequence resulting in the in situ generation of acyl aziridine which undergoes a ring expansion reaction via an initial C–N rupture of aziridine ring followed by ring closure to the oxazolines. The methodology provided novel one-pot procedure for the synthesis of trans-2,5-diaryl-4-aroyloxazolines. Keywords Aziridine Ring expansion Oxazoline K5[PW11ZnO39].23H2O