MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Organic ChemistryAldehydes and ketonesChemical Reactions of Carbonyl compounds

Which of the following reagents converts both acetaldehyde and acetone to alkanes?

A.Ni/H2

B.LiAlH4

C.I2/NaOH

D.Zn-Hg/conc.HCl✓ Correct

Explanation

Alkanes can be formed from both aldehydes and ketones with zinc amalgam and concentrated hydrochloric acid. The acetaldehyde will form ethane and the acetone will form propane. This reaction is known as Clemmensen reduction. So, the reagent that can be use to convert both acetaldehyde and acetone is Zn-Hg/conc.HCl

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