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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

Q6(g). Inductive ether fragmentation

Question

Predict the major inductive-cleavage peak for sec-butyl isopropyl ether, CH₃CH(C₂H₅)OCH(CH₃)₂.

Answer in brief

The prominent/base peak is m/z=43, the isopropyl cation; a sec-butyl cation also gives m/z=57.

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CoversInductive ether fragmentationMass spectrometry

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