Number of reactions in which aldehyde is obtained as one of the product. (A) (B) CH 3 − C ≡ N (i) SnCl 2 / HCl (ii) H 3 O + (C) (D) (E) (F) CH 3 CH 2 OH → ∆ C u (G) (H) CH 3 C O

Question

Number of reactions in which aldehyde is obtained as one of the product.

(A)

(B) $CH_{3} - C \equiv N (i) SnCl_{2} / HCl (ii) H_{3} O^{+}$

(C)

(D)

(E)

(F) ${CH}_{3} {CH}_{2} OH \to_{∆}^{C u}$

(G)

(H) ${({CH}_{3} C O O)}_{2} C a + {(H C O O)}_{2} C a \to_{D i s t i l l a t i o n}^{D r y}$

(I) ${CH}_{3} MgCl + {CH}_{3} - C \equiv N \underset{H_{3} O^{+}}{\to}$

TestHub · Accepted Answer

Question Explanation:

Count the number of reactions that yield an aldehyde.

Concept:

Preparation of Aldehydes.

Solution:

(a) Rosenmund Reduction: Produces $CH_{3} CHO$ . •

(b) Stephen Reaction: Produces $CH_{3} CHO$ .

$CH_{3} - C \equiv N (i) SnCl_{2} / HCl (ii) H_{3} O^{+} C H_{3} C H O$

(C) Etard Reaction: Produces Benzaldehyde.

(D) Hydrolysis of Imine: Produces Benzaldehyde.

(E) DIBAL-H Reduction: Produces Benzaldehyde.

(F) Alcohol Oxidation $(Cu /Δ)$ : Ethanol produces $CH_{3} CHO$ .

${CH}_{3} {CH}_{2} OH \to_{∆}^{C u} C H_{3} C H O$

(G) Secondary Alcohol + PCC: Produces Acetone (Ketone).

(H) Dry Distillation: Calcium acetate + Calcium formate produces $CH_{3} CHO$ .

(I) Hydrolysis: Methyl cyanide $+ CH_{3} MgCl$ produce Acetone.

Therefore, aldehyde producing reactions: a, b, c, d, e, f, h.

Total number of reactions that yield an aldehyde = 7.

Chemistry - Carboxylic acid and their Derivatives Question with Solution | TestHub