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UPSC Combined Geo-Scientist

Chemist

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

Mains Paper III covers analytical and organic chemistry.

UPSC Combined Geo-Scientist, Mains · 2019 · Mains Paper III

Q8(a). Product and stereochemistry of an alcohol with TsCl/pyridine

Question

What is the product formed in the following reaction? Outline its mechanism explaining the stereochemistry. [chiral alcohol with a sulphonyl chloride in pyridine given in the paper]

Model answer

The free solution for 2019 answers questions 1, 3, 4, 6, 7 and 10, 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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Coverstosylationretention of configurationsulphonate esterpyridine

All parts of Question 8