Give the reactants and conditions for two separate reaction types that each yield diethylamine, $\text{CH}_3\text{CH}_2\text{NHCH}_2\text{CH}_3$. reaction one: reaction two:
Describe how the basicities of diethylamine, phenylamine and ammonia compare in aqueous solution, and explain your answer using structure. Say which is least basic and which is most basic.
Phenylamine reacts with $\text{HNO}_2\text{(aq)}$ at $4^{\circ}\text{C}$ to form compound $\text{P}$. Compound $\text{P}$ then reacts with phenol in alkaline conditions at $4^{\circ}\text{C}$. After this reaction, the product is acidified to give azo compound $\text{Q}$. Draw the structure of $\text{Q}$. Circle the azo group in your drawing. State one use of an azo compound such as $\text{Q}$.
$\text{CH}_3\text{CH}_2\text{NHCH}_2\text{CH}_3$ reacts with ethanoyl chloride, $\text{CH}_3\text{COCl}$, to produce the amide N,N-diethylethanamide, $\text{CH}_3\text{CON(C}_2\text{H}_5)_2$. Figure 9.1 shows an incomplete account of the mechanism for this reaction. Complete the mechanism in Fig. 9.1. You should include: • every relevant dipole ($\delta^+$ and $\delta^-$) and full electric charge ($+$ and $-$) on the species in box one and in box two • every relevant lone pair on the species in box one and in box two • every relevant curly arrow to show electron-pair movement in box one and in box two • the formula of the second product in box three.
Name the mechanism.