Abstract
Twenty one new thiophene-substituted 1,2,4-oxadiazol-5(4H)-ones, 1,2,4-oxadiazol-5(4H)-thiones, and 1,2,4-oxadiazin-5(6H)-ones were synthesized by the reaction of thiophene-ring substituted amidoximes with ethyl chloroformate, thiophosgene, and chloroacetylchloride, respectively. Their structure elucidation was performed by means of spectral measurements (IR, NMR, and MS) and physical data.
Acknowledgments
Abant Izzet Baysal University Research Fund (BAP Grant No. 2003.03.03.184) is gratefully acknowledged for financial assistance.