Return to Article Details HETEROCYCLES CONTAINING A BRIDGE NITROGEN ATOM. 10. UNEXPECTED CLOSURE OF OXAZOLE RING DURING THE REACTION OF 2-CHLORO-1-PHENACYLPYRIDINIUM SALT WITH POTASSIUM CYANATE. CRYSTAL STRUCTURE OF 2-(<i>p</i>-NITROPHENYL)OXAZOLO[3,2-<i>a</i>]PYRIDINIUM BROMIDE AND N-(<i>p</i>-NITROPHENACYL)PYRIDONE-2 Download Download PDF