Question
What is meant by the following terms? Give an example of the reaction in each case.
2, 4-DNP-derivative
Solution
2,4 dinitrophenylhydrazine are 2,4 –DNP – derivatives, which are produced when aldehyde or ketones react with 2,4-dinitropheylhydrazine in a weekly acidic medium. 2, 4-DNP-derivatives are yellow, orange or red solids, useful for characterisation of aldehydes and ketones.
