allery**Gatterman–Koch reaction** formylates benzene using
A$RCOCl$ with $AlCl_3$
B$CHCl_3$ with aq. $NaOH$
C$CO + HCl$ with $AlCl_3$/$CuCl$
D$HCHO$ with conc. $H_2SO_4$
Answer & Solution
Correct answer: C. $CO + HCl$ with $AlCl_3$/$CuCl$
$C_6H_6 + CO + HCl \xrightarrow{AlCl_3, CuCl} C_6H_5CHO$.
Equivalent to a Friedel–Crafts acylation with the in-situ generated formyl cation $HC≡O^+$.
Keep practising Aldehydes, Ketones and Carboxylic Acids
Browse all Aldehydes, Ketones and Carboxylic Acids questions for ISC Class 12, or explore more Chemistry topics.
Related questions
The IUPAC name of the simplest aldehyde, $\mathrm{HCHO}$, isWhich of the following named reactions does **NOT** require an $\alpha$-hydrogen on the suMatch each named organic reaction to its description.The product of the Hunsdiecker reaction on $CH_3CH_2COOAg$ with $Br_2/CCl_4$ isMatch each named organic reaction to its description.Among $1$-butanol, $2$-butanol and $tert$-butanol, the order of reactivity in the Lucas teIn **Dow's process**, chlorobenzene is converted to phenol by treatment withIdentify the correct conversion: $CH_3CN \xrightarrow{?} CH_3CHO$ (one step).