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Alcohols, Phenols And Ethers

Question
CBSEENCH12010237

How would you obtain 

(i) Picric acid (2, 4, 6-trinitrophenol) from phenol, 

(ii) 2-Methylpropene from 2-methylpropanol? 

Solution

(i) Phenol on reaction with concentrated HNO3 results in the formation of 2,4,6-Trinitrophenol or Picric acid. 

ii) 2-methyl propene can be obtained from 2-methyl propanol by the reaction of the later with alc. KOH.