NEETChemistryAldehydes and Ketones
Match List-I with List-II. List-I List-II (A) R-COCl + H ₂ Pd-BaSO ₄ (I) Stephen reaction (B) R-CN + SnCl ₂ + HCl H ₃ O ^+ (II) Rosenmund reduction (C) Toluene + CrO ₂ Cl ₂ H ₃ O ^+ (III) Gattermann-Koch reaction (D) Benzene + CO + HCl Anhyd. AlCl ₃/ CuCl (IV) Etard reaction Choose the correct answer from the options given below:
Options
- A(A)-(I), (B)-(II), (C)-(IV), (D)-(III)
- B(A)-(II), (B)-(I), (C)-(IV), (D)-(III)
- C(A)-(II), (B)-(I), (C)-(III), (D)-(IV)
- D(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
Correct answer
B. (A)-(II), (B)-(I), (C)-(IV), (D)-(III)
Step-by-step solution
(A) The reduction of an acyl chloride ( R-COCl ) to an aldehyde using H ₂ and Pd-BaSO ₄ is the Rosenmund reduction. (B) The reduction of a nitrile ( R-CN ) to an imine using SnCl ₂ and HCl, followed by hydrolysis to an aldehyde, is the Stephen reaction. (C) The oxidation of toluene to benzaldehyde using chromyl chloride ( CrO ₂ Cl ₂ ) is the Etard reaction. (D) The formylation of benzene using CO and HCl in the presence of anhydrous AlCl ₃ /CuCl is the Gattermann-Koch reaction. Therefore, the correct match is (A)-(