States of matter — Chemistry 9701 AS & A Level Question & Worked Solution

(a)[3]

State the names of three functional groups in the noradrenaline molecule.

(b(i))

Look at the two-step synthesis of noradrenaline from dihydroxybenzaldehyde below. Draw the structure of the intermediate $Z$ and suggest reagents for steps 1 and 2.

(b(ii))[5]

Dihydroxybenzaldehyde reacts with $\text{Br}_2\text{(aq)}$. Describe what can be seen in this reaction. Draw the structure of the product.

(c(i))

Draw the structures of the products when noradrenaline is reacted with dilute $\text{NaOH(aq)}$.

(c(ii))

Draw the structures of the products when noradrenaline is reacted with dilute $\text{HCl(aq)}$.

(c(iii))[4]

Draw the structures of the products when noradrenaline is reacted with an excess of ethanoyl chloride, $\text{CH}_3\text{COCl}$.

(d)[2]

Name the new functional groups formed in the reaction in (c)(iii).

States of matter — practice question

Worked solution & mark scheme