Synthesis and spectral properties of new 6-methoxy-3-(2′-thienyl)-1,2-benzisoxazole and its isomeric benzoxazole

6-Methoxy-3-(2′-thienyl)-1,2-benzisoxazole has been prepared simultaneously with 6-methoxy-2-(2′-thienyl)-1,3-benzoxazole. The spectral data of these new compounds have been discussed. Mass spectroscopy has proved to be a valid tool in the structural characterization of these isomers and ¹³C nmr spectrometry confirmed their structures.