Nitrous acid deamination of 2, 2-dimethylpropylamine, (CH3)3CCH2NH2, gives the same products as were indicated as being formed

Question:

Nitrous acid deamination of 2, 2-dimethylpropylamine, (CH3)3CCH2NH2, gives the same products as were indicated as being formed from 1, 1-dimethylpropylamine in Figure 22.5. Suggest a mechanism for the formation of these compounds from 2, 2-dimethylpropylamine.