Sentence Examples


  • By the action of phosphorus pentachloride, the hydroxyl group is replaced by chlorine.
  • By the entrance of amino or hydroxyl groups into the molecule dyestuffs are formed.
  • When heated with concentrated hydrochloric acid the amino group is replaced by the hydroxyl group and the phenolic eurhodols are produced.
  • The hydrogen of the hydroxyl group in phenol can be replaced by metals, by alkyl groups and by acid radicals.
  • The meta-nitrocompound, which is precipitated last, is then reduced, and the amino group so formed is replaced by the hydroxyl group by means of the Sandmeyer reaction.

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