C7H6N2O2

C7H6N2O2 is the molecular formula for several chemical compounds, with the most common being 4-nitrobenzaldehyde. This organic compound is a derivative of benzaldehyde, where a nitro group (NO2) is attached to the para position of the benzene ring. 4-nitrobenzaldehyde is a pale yellow crystalline solid. It has a characteristic odor and is sparingly soluble in water but more soluble in organic solvents like ethanol and diethyl ether.

The chemical structure consists of a benzene ring substituted with an aldehyde group (CHO) and a nitro group (NO2). The presence of these functional groups makes it a versatile intermediate in organic synthesis. It is used in the production of pharmaceuticals, dyes, and other fine chemicals. For instance, it can be reduced to 4-aminobenzaldehyde, which is a precursor for various aromatic amines. It can also undergo condensation reactions due to the aldehyde functionality.

Other isomers with the molecular formula C7H6N2O2 exist, such as 2-nitrobenzaldehyde and 3-nitrobenzaldehyde, which differ in the position of the nitro group on the benzene ring. These isomers also serve as chemical intermediates but possess distinct physical and chemical properties due to their structural variations. The synthesis of these nitrobenzaldehydes typically involves the nitration of benzaldehyde or the oxidation of corresponding nitrotoluenes.