2 questions
A (predominantly) is $$\text{H}_3\text{C}-\underset{\substack{| \\ \text{CH}_3}}{\text{CH}}-\text{CH}=\text{CH}_2 + \text{HBr} \rightarrow \text{A}$$
In a reaction of aniline a coloured product C was obtained. The structure of C would be
