(a(i))
Name the functional group that curcumin shares with compounds A and D.
(a(ii))[2]
Name the functional group that is shared by compounds A and B.
(b(i))
Suggest the structures of compounds B, C and D, and draw their structural formulae in the relevant boxes opposite.
(b(ii))[4]
Suggest suitable reagents and conditions for reaction 4.
(c(i))
Name the type of reaction for reaction 2.
(c(ii))
Suggest a reagent for reaction 2.
(c(iii))[3]
Suggest the structure of compound A, and draw its structural formula in the relevant box opposite.
(d(i))
Name the functional group in curcumin that reacts with cold dilute acidified $\text{KMnO}_4$.
(d(ii))[2]
Name two functional groups in curcumin that react with $\text{Br}_2(\text{aq})$.
(e)[2]
Suggest a structure for curcumin, and draw its structural formula in the relevant box opposite.