Zingerone having molecular formula C11H14O3 is constituent of ginger. It gives following test: Reagent Observation Neutral FeCl3 Violet colouration 2,4-D.N.P. Yellow orange colouration NaOI Yellow ppt. Zingerone on bromination with bromine water produces monobrominated product. Structure of zingerone will be?

Question

Zingerone having molecular formula C11H14O3 is constituent of ginger. It gives following test: Reagent Observation Neutral FeCl3 Violet colouration 2,4-D.N.P. Yellow orange colouration NaOI Yellow ppt. Zingerone on bromination with bromine water produces monobrominated product. Structure of zingerone will be? (A) Option 1

(B)

(C)

(D)

Tardigrade Admin · Accepted Answer

Nuetral FeCl3 Blue colouration arrow Phenolic group Solution

With bromine water produce monobrominated product arrow only one ortho position is left. Solution

Reagent	Observation
Neutral $F e C l_{3}$	Violet colouration
2,4-D.N.P.	Yellow orange colouration
$N a O I$	Yellow ppt.

Nuetral FeCl3​ Blue colouration → Phenolic group With bromine water produce monobrominated product → only one ortho position is left.

Nuetral $F e C l_{3}$
Blue colouration $\to$ Phenolic group

With bromine water produce monobrominated product $\to$ only one ortho position is left.