Nitro compound

Nitro compounds are organic compounds that contain one or more nitro functional groups (–NO2). They are often highly explosive, especially when the compound contains more than one nitro group and is impure.

Quotes

 * The α-hydrogens of nitroalkanes are appreciably acidic due to resonance stabilization of the anion … The anions derived from nitroalkanes give typical nucleophilic addition reactions with aldehydes (the Henry-Nef tandem reaction). Note that the nitro group can be changed directly to a carbonyl.
 * George S. Zweifel and Michael H. Nantz, Modern Organic Synthesis (2006), Ch. 1. Synthetic Design