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Indian Forest Service (Mains)

Chemistry optional

  • 2 papers
  • 200 marks each
  • 3 h per paper

Paper II covers organic chemistry and spectroscopy.

Indian Forest Service (Mains), Chemistry optional · 2025 · Paper II

Q2(c). Favorskii reactions of two alpha-haloketones

Question

Complete the dibromoketone with KOH/DMSO and the fused α-bromocyclobutanone with NaOH/MeCN, giving mechanisms. [structures given in the paper]

Model answer

The free solution for 2025 answers questions 1, 3, 4, 5 and 8, the ones picked in its time plan. This part is not answered on the site yet. New answers are announced on Telegram.

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Topic notes: molecular rearrangements, with every Civil Services, IFoS and Geo-Scientist PYQ →

CoversFavorskii rearrangementcyclopropanone intermediatering contractionα-haloketoneα,β-unsaturated acid

All parts of Question 2