Standard methods for isocyanate synthesis are not suitable for the preparation of 2, 2, 2- trinitroethyl isocyanate (I), a compound that is of interest as an intermediate for energetic materials. The method employing an amine with phosgene'cannot be used because the required precursor, 2, 2, 2-trinitroethylamine, is not availableq2 An alternate method via the rearrangement of an acyl azide3 is impractical since the required 3, 3, 3-trinitropropanoic ...