Question

Which of the following reactions will not result in the formation of carbon- carbon bonds?

• A. Friedal- Crafts acylation
• B. Reimer- Tieman reaction
• C. Cannizaro reaction
• D. Wurtz reaction

Answer 1

Answer: (C)

In cannizaro reaction $C-C$ cannot be formed as here the compound (aldehyde) having no $\alpha -H-$ atom undergoes disproportion with a strong base to give an alcohol and an acid salt for eg.
$2HCHO\stackrel{conc.NaOH}{\to }HCOONa+C{H}_{3}OH$
While in all other reactions C-C bond formation occur.
Friedal- Crafts acylation:-

Reimer- Tieman reaction:-

Wurtz reaction:-