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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 · 2021 · Paper II

Q8(a)(ii). Hydroxy-methoxyacetophenone assignment

Question

C₉H₁₀O₃: IR 3400, 1680 cm⁻¹; ¹H NMR δ 7.8 (1H, d, J = 8 Hz), 7.0 (1H, d, J = 8 Hz), 6.5 (1H, s), 5.8 (1H, s, D₂O-exchangeable), 3.9 (3H, s), 2.3 (3H, s). Deduce a structure and its Zn(Hg)/HCl reduction product.

Model answer

The free solution for 2021 answers questions 1, 2, 3, 5 and 6, 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: structure from combined IR, NMR and mass spectra, with every Civil Services, IFoS and Geo-Scientist PYQ →

Coversstructure elucidation¹H NMRIR spectroscopyhydroxy methoxyacetophenoneClemmensen reduction

All parts of Question 8