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)

Cannizzaro reaction

Answer 2

(a) Reimer-Tiemann reaction :
(b) Cannizzaro reaction :
$\underset{\text{Formaladehyde}}{ {HCHO}}$ ${->[50\,NaOH]}$ $\underset{\text{Sodium formate}}{ {HCOO^{?}Na^{?}}}$ ${+}$ $\underset{\text{Methanol}}{ {CH3OH}}$
(c) Wurtz reaction :
${H3C?I + 2Na + I?CH3 -> CH3?CH3 + 2NaI}$
Methyl iodide $\quad$ Ethane
(d) Friedel-Crafts acylation :
From the above examples it is evident that C?C bond formation does not takes place in Cannizzaro reaction.