Distinguishing

 

 

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Approach:

Spot the difference: FG or structure?

  • FG: Use a test specific to the FG present in only one of the two compounds.
  • Structure: Most of the time → Iodoform or selective oxidation

Example: Work in Progress

 

Note:

  • In general, there is no FG test for esters and amides. They need to be hydrolysed into their respective acid/alcohol/amine before testing.
  • Exception: 1⁰ amides produce NH3 on hydrolysis

Example: Work in Progress