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

• Correct answer
  A

  Cannizzaro reaction
• B

  Wurtz reaction
• C

  Reimer-Tiemann reaction
• D

  Friedel-Crafts acylation

Solution

$\mathrm{C}-\mathrm{C}$ bond is not formed in Cannizaro reaction while other reactions result in the formation of $\mathrm{C}-\mathrm{C}$ bond. Cannizaro reaction Wurtz reaction $2 R-X+2 \mathrm{Na} \longrightarrow R-R+2 \mathrm{Na} \times$

Hence, the correct answer is option: 'A'.