Nitroso refers to a functional group in organic chemistry which has the general formula R-NO. Nitroso compounds can be prepared by the reduction of nitro compounds or by the oxidation of hydroxylamines. A good example is (CH₃)₃CNO, known formally as 2-methyl-2-nitrosopropane, or t-BuNO, which is prepared by the following sequence A. Calder, A. R. Forrester, and S. P. Hepburn 2-Methyl-2-nitrosopropane and Its Dimer Organic Syntheses, Coll. Vol. 6, p.803; Vol. 52, p.77. Link:

(CH₃)₃CNH₂ → (CH₃)₃CNO₂

(CH₃)₃CNO₂ → (CH₃)₃CNHOH

(CH₃)₃CNHOH → (CH₃)₃CNO

(CH₃)₃CNO exists in solution as an equilibrium mixture of itself, which is blue, and 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.

See also

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• Nitrosamine, the functional group with the NO attached to an amine, such as R₂N-NO
• list of publications in chemistry
• nitrosobenzene

References

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Functional groups

Нитрозност