The reagent used Gatterman-Koch formylation of arene is

The reagent used Gatterman-Koch formylation of arene is
  1. $\mathrm{CO}_2, \mathrm{HCl}$
  2. $\mathrm{CrO}_2 \mathrm{Cl}_2$
  3. $\mathrm{CO}, \mathrm{HCl}$
  4. $\mathrm{DiBAl}-\mathrm{H}$

Solution

$\text { Gatterman - Koch formylation of arene }$

Asked in: MHT CET 2021 (20 Sep Shift 2)

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