Curcumin incorporates several functional groups whose structure was first identified in 1910.
The aromatic ring systems, which are phenols, are connected by two α,β-unsaturated carbonyl groups.
The diketones form stable enols and are readily deprotonated to form enolates; the α,β-unsaturated carbonyl group is a good Michael acceptor and undergoes nucleophilic addition.

Curcumin is used as a complexometric indicator for boron.
It reacts with boric acid to form a red-colored compound, rosocyanine.
Curcumin incorporates several functional groups whose structure was first identified in 1910. The aromatic ring systems, which are phenols, are connected by two α,β-unsaturated carbonyl groups. The diketones form stable enols and are readily deprotonated to form enolates; the α,β-unsaturated carbonyl group is a good Michael acceptor and undergoes nucleophilic addition.
Curcumin is used as a complexometric indicator for boron. It reacts with boric acid to form a red-colored compound, rosocyanine.
Curcumin