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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 · 2022 · Paper II

Q4(a). Claisen condensation followed by cyclization

Question

Identify A and B from the supplied hydroxy ketone and diethyl oxalate: sodium ethoxide/ethanol then aqueous HCl gives A; aqueous acid gives B. [structure of the hydroxy ketone given in the paper]

Model answer

The free solution for 2022 answers questions 1, 3, 5, 7 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: carbonyl additions and condensations, with every Civil Services, IFoS and Geo-Scientist PYQ →

CoversClaisen condensationdiethyl oxalateacifran synthesisfuranone cyclizationsodium ethoxide

All parts of Question 4