The simplest example of these compounds is the dominant propellant in airbags.
An ion of this functional group nucleophilically displaces a chloride ion in the first step of the Banert cascade. In a classic synthesis, sulfinic acid and one of these functional groups are produced from a diazonium salt and a sulfonamide. Alkyl versions of this functional group are produced from aliphatic alcohols in a variant of the Mitsunobu reaction. Tri-phenyl-phosphine may be used as the reducing agent to convert these functional groups into amines. Acyl versions of this functional group are heated to yield an (*) isocyanate in the Curtius rearrangement. These compounds are also joined with alkynes via cycloaddition in a click chemistry reaction named for Huisgen. The simplest example of these compounds is the dominant propellant in airbags. For ten points, name this functional group containing three nitrogen atoms linked by two double bonds.
An ion of this functional group nucleophilically displaces a chloride ion in the first step of the Banert cascade.
azides (the reaction in the second line is the Dutt-Wormall reaction) 