a. i. Which would be more readily attacked by an electrophile – benzene or phenylamine? Explain your answer.

ii. Write a general equation to show the equation for the reaction of phenylamine with excess of an electrophile, represented as X+.

b. i. Why is the reaction of phenylamine to make the diazonium ion carried out below 10 °C?

ii. Write a balanced equation to show how nitrous acid is made for the reaction in part b i to take place.

iii. Show the two steps that would be used to make the yellow dye shown in Figure 27.8, starting from phenylamine.

Transcribed Image Text:

N=N- N(CH;)2 Figure 27.8 A molecule of a yellow azo dye. Instead of phenol, C,H,OH, the reactant used in the coupling reaction is CH;N(CH,),.