New Life for Diazoacetonitrile (N₂CHCN): in situ Generation and Practical Synthesis of CN-Pyrazoles

Explosive diazoacetonitrile (N₂CHCN) was generated in situ and used in the practical synthesis of agrochemistry-related CN-pyrazoles. In situ generated N₂CHCN is much safer than the individual reagent. The developed method is, therefore, expected to make this reagent as useful in chemistry as ethyl diazoacetate (N₂CHCO₂Et).