Reactions with Phosphoroorganic Compounds, XXVIth Com- munic.: A New Synthetic Principle/or Oxazoles Oxazoles can be prepared by a novel synthetic approach involving the simultaneous reaction of triphenylphosphine, an ~-azidoearbonyl compound NaCtI(l%t)COl% u and an acyl halide RaCOX. ... Iminophosphorane und die deprotonierten Dialkoxy-alkylamino- phosphonate, welehc/thnliche syrtthetische M6gliehkeiten bieten, ...