Question

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

• A. Reimer-Tiemann reaction
• B. Cannizzaro reaction
• C. Wurtz reaction
• D. Friedel-Crafts acylation

Answer 1

Answer: (B)

(a) Reimer-Tiemann reaction :
(b) Cannizzaro reaction:
$\underset{\text{ Formaladehyde }}{\mathrm{HCHO}}\stackrel{50NaOH}{\to }\underset{\text{ Sodium formate }}{HCO{O}^{\ominus }N{a}^{\oplus }}+\underset{\text{Methanol}}{C{H}_{3}OH}$
(c) Wurtz reaction :
$H_{3}C-I+2Na+I-C{H}_3⟶C{H}_3-C{H}_3+2NaI$
Methyl iodide Ethane
(d) Friedel-Crafts acylation :
From the above examples it is evident that $C-C$ bond formation does not takes place in Cannizzaro reaction.