Reaction Summary

Reagents

  • Hydrogen cyanide,

Conditions

  • Room temperature

Catalyst

  • Trace / (source of nucleophile)

Chemical Equation

Equation

By-Products

  • None

Observations

Observations

  • No visible change (colourless liquid/solution throughout)

⚠️ 9701 Exam Notes / Pitfalls

Warning

  • Symmetrical ketones (e.g. propanone) give an achiral product; unsymmetrical ones (e.g. butanone) give a racemic mixture.
  • Must state trace /.
  • Chain extended by one carbon; hydrolysis of the nitrile then gives a 2-hydroxycarboxylic acid.