refers to a functional group
in organic chemistry
which has the general formula RNO. Nitroso compounds can be prepared by the reduction of nitro compounds
or by the oxidation of hydroxylamines
. A good example is (CH3
CNO, known formally as 2-methyl-2-nitrosopropane
, or t
-BuNO, which is prepared by the following sequence:
- (CH3)3CNH2 → (CH3)3CNO2
- (CH3)3CNO2 → (CH3)3CNHOH
- (CH3)3CNHOH → (CH3)3CNO
CNO is blue and exists in solution in equilibrium
with its dimer
, which is colorless, m.p. 80 − 81 °C.
In the Fischer-Hepp rearrangement aromatic 4-nitroso-anilines are prepared from the corresponding nitrosamines. Another named reaction involving a nitroso compound is the Barton reaction.