Question

Which of the following reactions does not match correctly with its name?

• A. R–CO–NH₂ + Br₂ + 4KOH (aq) → : Hofmann degradation
• B. R–NH₂ + 3R–X → : Hofmann exhaustive alkylation
• C. R–CO–NH₂ + 4[H] → (LiAlH₄) : Mendius reduction
• D. R–CH₂– N⁺– (R) 3X ^– → ((i) moist Ag₂O, (ii) △, -H₂ O) : Hofmann elimination

Answer 1

The Correct Option is C

The Mendius reduction is not a recognized or commonly used name for any specific reaction. It appears to be a misnomer or a misspelling. The correct name for the reaction described in option (C) is Clemmensen reduction, not Mendius reduction. The Clemmensen reduction involves the reduction of a carbonyl group (such as R–CO–NH₂) to an alkane using zinc amalgam (Zn[Hg]) and concentrated hydrochloric acid (HCl), rather than LiAlH₄. 
Therefore the reaction that does not match correctly with its name is option (C): R–CO–NH₂ + 4[H] → (LiAlH₄) : Mendius reduction.