Hydroxylamine, amino radical from

The reduction of hydroxylamine by titanous salts in water produces the free amino radical, a reaction analogous to the formation of triphenylmethyl from the carbinol and a reducing agent.138 The amino radical will attack benzene to give diaminocyclohexadiene and di-(aminocyclohexadienyl) it converts cyclohexene into cyclohexyl-amine.139... 

The latter technique has been extended to a wide range of types of organic compound and to the use of ferrous ion in place of titanous ion (Shiga, 1966). The amino radical has been generated instead of hydroxyl by using hydroxylamine and titanous ion (Oorvaja et al, 1966 Dewing et al., 1966). The wealth of information which has been obtained from these studies is discussed in subsequent sections. 

The reduction of apical nitro substituents to amino groups is a precursor to the synthesis of a large variety of sarcophaginate complexes. The redox behaviour of these nitro substituents is very diverse and complexes with nitro radical anions, nitroso, hydroxylamine and amine substituents were obtained as primary products from such reductions, depending on the t e of reductant, pH, solvent, and the amount of reductant supplied [414]. 

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