Organic Synthesis

The thermal decomposition of carboxylic azides to produce an isocyanate. The reaction sequence - including subsequent reaction with water which leads to amines - is named the Curtius Reaction. This reaction is similar to the Schmidt Reaction with acids, differing in that the acyl azide in the present case is prepared from the acyl halide and an azide salt. It yeilds a primary amine, giving off carbon dioxide.