The antifertility drug “Novestrol” can react with :
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- \(\mathrm{Br_2}\) /water; \(\mathrm{ZnCl_2}\) /HCl; \(\mathrm{FeCl_3}\)
- \(\mathrm{Br_2}\) /water; \(\mathrm{ZnCl_2}\) /HCl; NaOCl
- Alcoholic HCN; NaOCl; \(\mathrm{ZnCl_2}\) /HCl
- \(\mathrm{ZnCl_2}\) /HCl; \(\mathrm{FeCl_3}\) ; Alcoholic HCN
The Correct Option is A
Solution and Explanation
1) Br2/water: reacts with the activated phenol ring (bromination).
2) ZnCl2/HCl (Lucas reagent): reacts with the tertiary alcohol to give a turbid chloride.
3) FeCl3: gives a coloured complex with the phenolic -OH.
NaOCl (haloform) needs a methyl ketone or CH3CH(OH)- group, and alcoholic HCN needs a carbonyl group; neither is present.
So only the set Br2/water, ZnCl2/HCl, FeCl3 works.
Answer: (1) Br2 /water; ZnCl2 /HCl; FeCl3
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