Abstract The syntheses of the new heterocyclic azides which open a number ways of obtaining interesting isoxazole derivatives has been described. Chemical, spectral and X- ray data giving the evidence of the structure of these compounds are presented. X-ray studies were carried out on compounds I, II (C 5 H 5 N 5 O 2, C 12 H 9 N 5 O 3) with a= 3.775 (2), 7.179 (3); b= 11.593 (3), 8.135 (3); c= 8.443 (3), 11.610 (3); Z= 2, 2 and space ...
