The nitroso group is less important.
Azoxy Compounds, R N O N R', are usually yellow or red crystalline solids which result from the reduction of nitro or nitroso compounds by heating them with alcoholic potash (preferably using methyl alcohol).
The pseudo-nitrols, RR':C(NO)(NO 2), may be obtained by the action of nitrous acid on the secondary nitroparaffins; by the action of silver nitrite on such bromnitrosoparaffins as contain the bromine and the nitroso group united to the same carbon atom (0.
They may also be obtained by the reduction of nitroso compounds and of hydrazo compounds and of hydrazones (J.
It yields a nitroso derivative, is nitrated by nitric acid to dilituric acid and brominated by bromine.
Numerous nitroso compounds are met with in the aromatic series.