How is 2-nitro-1H-pyrrole (CAS: 5919-26-6) typically synthesized?

2-nitro-1H-pyrrole can be synthesized through the nitration of pyrrole. This process involves treating pyrrole with a nitration mixture, usually consisting of concentrated nitric acid and sulfuric acid. The reaction is typically carried out under reflux to ensure complete nitration. The yield can vary depending on the reaction conditions, but it is generally around 70-85%. This method requires careful handling due to the strong acids involved.